diff --git a/.gitignore b/.gitignore
index b9e7b61..1b4fc08 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,5 @@
 node_modules/
 ignore
-.vscode
 test/remote
 
 playground
diff --git a/.vscode/extensions.json b/.vscode/extensions.json
new file mode 100644
index 0000000..ba691e4
--- /dev/null
+++ b/.vscode/extensions.json
@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "hbenl.vscode-mocha-test-adapter"
+    ]
+}
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..95177df
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,4 @@
+{
+    "mochaExplorer.files": "**/*.spec.js",
+    "mochaExplorer.timeout": 600000
+}
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3f6ad62..52e6613 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 2.4.2
+
+    - Implement updateNewerFiles option
+
 ## 2.4.0
 
     - Add support for SFTP - thanks @der-On
diff --git a/README.md b/README.md
index abf1acc..99be7a1 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,7 @@ const config = {
     forcePasv: true,
     // use sftp or ftp
     sftp: false,
+    updateNewerFiles: true // only upload files that have changed
 };
 
 ftpDeploy
@@ -118,4 +119,3 @@ npm test
 ## ToDo
 
 -   re-enable continueOnError
--   update newer files only (PR welcome)
diff --git a/package-lock.json b/package-lock.json
index 3608509..8eada95 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,25 +1,26 @@
 {
     "name": "ftp-deploy",
-    "version": "2.4.0",
+    "version": "2.4.2",
     "lockfileVersion": 2,
     "requires": true,
     "packages": {
         "": {
-            "version": "2.4.0",
+            "version": "2.4.2",
             "license": "MIT",
             "dependencies": {
                 "bluebird": "^3.7.2",
-                "minimatch": "3.0.4",
+                "memory-streams": "^0.1.3",
+                "minimatch": "^3.0.4",
                 "promise-ftp": "^1.3.5",
                 "read": "^1.0.7",
-                "ssh2-sftp-client": "^5.3.2",
+                "ssh2-sftp-client": "^7.2.1",
                 "upath": "^2.0.1"
             },
             "devDependencies": {
-                "chai": "^4.3.0",
+                "chai": "^4.3.4",
                 "delete": "^1.1.0",
-                "ftp-srv": "^4.4.0",
-                "mocha": "^8.2.1"
+                "ftp-srv": "^4.5.0",
+                "mocha": "^9.1.3"
             },
             "engines": {
                 "node": ">=8"
@@ -53,30 +54,33 @@
             }
         },
         "node_modules/ansi-regex": {
-            "version": "3.0.0",
-            "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
-            "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+            "version": "5.0.1",
+            "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
+            "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
             "dev": true,
             "engines": {
-                "node": ">=4"
+                "node": ">=8"
             }
         },
         "node_modules/ansi-styles": {
-            "version": "3.2.1",
-            "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
-            "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+            "version": "4.3.0",
+            "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
+            "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
             "dev": true,
             "dependencies": {
-                "color-convert": "^1.9.0"
+                "color-convert": "^2.0.1"
             },
             "engines": {
-                "node": ">=4"
+                "node": ">=8"
+            },
+            "funding": {
+                "url": "https://github.com/chalk/ansi-styles?sponsor=1"
             }
         },
         "node_modules/anymatch": {
-            "version": "3.1.1",
-            "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.1.tgz",
-            "integrity": "sha512-mM8522psRCqzV+6LhomX5wgp25YVibjh8Wj23I5RPkPppSVSjyKD2A2mBJmWGa+KN7f2D6LNh9jkBCeyLktzjg==",
+            "version": "3.1.2",
+            "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-3.1.2.tgz",
+            "integrity": "sha512-P43ePfOAIupkguHUycrc4qJ9kz8ZiuOUijaETwX7THt0Y/GNK7v0aa8rY816xWjZ7rJdA5XdMcpVFTKMq+RvWg==",
             "dev": true,
             "dependencies": {
                 "normalize-path": "^3.0.0",
@@ -87,13 +91,10 @@
             }
         },
         "node_modules/argparse": {
-            "version": "1.0.10",
-            "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
-            "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
-            "dev": true,
-            "dependencies": {
-                "sprintf-js": "~1.0.2"
-            }
+            "version": "2.0.1",
+            "resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz",
+            "integrity": "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==",
+            "dev": true
         },
         "node_modules/arr-union": {
             "version": "3.1.0",
@@ -105,9 +106,9 @@
             }
         },
         "node_modules/asn1": {
-            "version": "0.2.4",
-            "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
-            "integrity": "sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==",
+            "version": "0.2.6",
+            "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.6.tgz",
+            "integrity": "sha512-ix/FxPn0MDjeyJ7i/yoHGFt/EX6LyNbxSEhPPXODPL+KB0VPk86UYfL0lMdy+KCnv+fmvIzySwaK5COwqVbWTQ==",
             "dependencies": {
                 "safer-buffer": "~2.1.0"
             }
@@ -203,12 +204,6 @@
             "engines": [
                 "node >=0.10.0"
             ],
-            "dependencies": {
-                "dtrace-provider": "~0.8",
-                "moment": "^2.19.3",
-                "mv": "~2",
-                "safe-json-stringify": "~1"
-            },
             "bin": {
                 "bunyan": "bin/bunyan"
             },
@@ -229,26 +224,26 @@
             }
         },
         "node_modules/chai": {
-            "version": "4.3.0",
-            "resolved": "https://registry.npmjs.org/chai/-/chai-4.3.0.tgz",
-            "integrity": "sha512-/BFd2J30EcOwmdOgXvVsmM48l0Br0nmZPlO0uOW4XKh6kpsUumRXBgPV+IlaqFaqr9cYbeoZAM1Npx0i4A+aiA==",
+            "version": "4.3.4",
+            "resolved": "https://registry.npmjs.org/chai/-/chai-4.3.4.tgz",
+            "integrity": "sha512-yS5H68VYOCtN1cjfwumDSuzn/9c+yza4f3reKXlE5rUg7SFcCEy90gJvydNgOYtblyf4Zi6jIWRnXOgErta0KA==",
             "dev": true,
             "dependencies": {
                 "assertion-error": "^1.1.0",
                 "check-error": "^1.0.2",
                 "deep-eql": "^3.0.1",
                 "get-func-name": "^2.0.0",
-                "pathval": "^1.1.0",
+                "pathval": "^1.1.1",
                 "type-detect": "^4.0.5"
             },
             "engines": {
-                "node": ">=8"
+                "node": ">=4"
             }
         },
         "node_modules/chalk": {
-            "version": "4.1.0",
-            "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.0.tgz",
-            "integrity": "sha512-qwx12AxXe2Q5xQ43Ac//I6v5aXTipYrSESdOgzrN+9XjgEpyjpKuvSGaN4qE93f7TQTlerQQ8S+EQ0EyDoVL1A==",
+            "version": "4.1.2",
+            "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.2.tgz",
+            "integrity": "sha512-oKnbhFyRIXpUuez8iBMmyEa4nbj4IOQyuhc/wy9kY7/WVPcwIO9VA668Pu8RkO7+0G76SLROeyw9CpQ061i4mA==",
             "dev": true,
             "dependencies": {
                 "ansi-styles": "^4.1.0",
@@ -261,39 +256,18 @@
                 "url": "https://github.com/chalk/chalk?sponsor=1"
             }
         },
-        "node_modules/chalk/node_modules/ansi-styles": {
-            "version": "4.3.0",
-            "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
-            "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
+        "node_modules/chalk/node_modules/supports-color": {
+            "version": "7.2.0",
+            "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
+            "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
             "dev": true,
             "dependencies": {
-                "color-convert": "^2.0.1"
+                "has-flag": "^4.0.0"
             },
             "engines": {
                 "node": ">=8"
-            },
-            "funding": {
-                "url": "https://github.com/chalk/ansi-styles?sponsor=1"
-            }
-        },
-        "node_modules/chalk/node_modules/color-convert": {
-            "version": "2.0.1",
-            "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
-            "integrity": "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==",
-            "dev": true,
-            "dependencies": {
-                "color-name": "~1.1.4"
-            },
-            "engines": {
-                "node": ">=7.0.0"
             }
         },
-        "node_modules/chalk/node_modules/color-name": {
-            "version": "1.1.4",
-            "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
-            "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
-            "dev": true
-        },
         "node_modules/check-error": {
             "version": "1.0.2",
             "resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.2.tgz",
@@ -304,31 +278,30 @@
             }
         },
         "node_modules/chokidar": {
-            "version": "3.4.3",
-            "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.4.3.tgz",
-            "integrity": "sha512-DtM3g7juCXQxFVSNPNByEC2+NImtBuxQQvWlHunpJIS5Ocr0lG306cC7FCi7cEA0fzmybPUIl4txBIobk1gGOQ==",
+            "version": "3.5.2",
+            "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.5.2.tgz",
+            "integrity": "sha512-ekGhOnNVPgT77r4K/U3GDhu+FQ2S8TnK/s2KbIGXi0SZWuwkZ2QNyfWdZW+TVfn84DpEP7rLeCt2UI6bJ8GwbQ==",
             "dev": true,
             "dependencies": {
-                "anymatch": "~3.1.1",
+                "anymatch": "~3.1.2",
                 "braces": "~3.0.2",
-                "fsevents": "~2.1.2",
-                "glob-parent": "~5.1.0",
+                "glob-parent": "~5.1.2",
                 "is-binary-path": "~2.1.0",
                 "is-glob": "~4.0.1",
                 "normalize-path": "~3.0.0",
-                "readdirp": "~3.5.0"
+                "readdirp": "~3.6.0"
             },
             "engines": {
                 "node": ">= 8.10.0"
             },
             "optionalDependencies": {
-                "fsevents": "~2.1.2"
+                "fsevents": "~2.3.2"
             }
         },
         "node_modules/chokidar/node_modules/is-glob": {
-            "version": "4.0.1",
-            "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.1.tgz",
-            "integrity": "sha512-5G0tKtBTFImOqDnLB2hG6Bp2qcKEFduo4tZu9MT/H6NQv/ghhy30o55ufafxJ/LdH79LLs2Kfrn85TLKyA7BUg==",
+            "version": "4.0.3",
+            "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.3.tgz",
+            "integrity": "sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg==",
             "dev": true,
             "dependencies": {
                 "is-extglob": "^2.1.1"
@@ -348,63 +321,22 @@
                 "wrap-ansi": "^6.2.0"
             }
         },
-        "node_modules/cliui/node_modules/ansi-regex": {
-            "version": "5.0.0",
-            "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.0.tgz",
-            "integrity": "sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==",
-            "dev": true,
-            "engines": {
-                "node": ">=8"
-            }
-        },
-        "node_modules/cliui/node_modules/is-fullwidth-code-point": {
-            "version": "3.0.0",
-            "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz",
-            "integrity": "sha512-zymm5+u+sCsSWyD9qNaejV3DFvhCKclKdizYaJUuHA83RLjb7nSuGnddCHGv0hk+KY7BMAlsWeK4Ueg6EV6XQg==",
-            "dev": true,
-            "engines": {
-                "node": ">=8"
-            }
-        },
-        "node_modules/cliui/node_modules/string-width": {
-            "version": "4.2.0",
-            "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.0.tgz",
-            "integrity": "sha512-zUz5JD+tgqtuDjMhwIg5uFVV3dtqZ9yQJlZVfq4I01/K5Paj5UHj7VyrQOJvzawSVlKpObApbfD0Ed6yJc+1eg==",
-            "dev": true,
-            "dependencies": {
-                "emoji-regex": "^8.0.0",
-                "is-fullwidth-code-point": "^3.0.0",
-                "strip-ansi": "^6.0.0"
-            },
-            "engines": {
-                "node": ">=8"
-            }
-        },
-        "node_modules/cliui/node_modules/strip-ansi": {
-            "version": "6.0.0",
-            "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.0.tgz",
-            "integrity": "sha512-AuvKTrTfQNYNIctbR1K/YGTR1756GycPsg7b9bdV9Duqur4gv6aKqHXah67Z8ImS7WEz5QVcOtlfW2rZEugt6w==",
+        "node_modules/color-convert": {
+            "version": "2.0.1",
+            "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
+            "integrity": "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==",
             "dev": true,
             "dependencies": {
-                "ansi-regex": "^5.0.0"
+                "color-name": "~1.1.4"
             },
             "engines": {
-                "node": ">=8"
-            }
-        },
-        "node_modules/color-convert": {
-            "version": "1.9.3",
-            "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
-            "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
-            "dev": true,
-            "dependencies": {
-                "color-name": "1.1.3"
+                "node": ">=7.0.0"
             }
         },
         "node_modules/color-name": {
-            "version": "1.1.3",
-            "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
-            "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
+            "version": "1.1.4",
+            "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
+            "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
             "dev": true
         },
         "node_modules/concat-map": {
@@ -452,11 +384,23 @@
             "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
             "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
         },
+        "node_modules/cpu-features": {
+            "version": "0.0.2",
+            "resolved": "https://registry.npmjs.org/cpu-features/-/cpu-features-0.0.2.tgz",
+            "integrity": "sha512-/2yieBqvMcRj8McNzkycjW2v3OIUOibBfd2dLEJ0nWts8NobAxwiyw9phVNS6oDL8x8tz9F7uNVFEVpJncQpeA==",
+            "hasInstallScript": true,
+            "optional": true,
+            "dependencies": {
+                "nan": "^2.14.1"
+            },
+            "engines": {
+                "node": ">=8.0.0"
+            }
+        },
         "node_modules/debug": {
-            "version": "4.2.0",
-            "resolved": "https://registry.npmjs.org/debug/-/debug-4.2.0.tgz",
-            "integrity": "sha512-IX2ncY78vDTjZMFUdmsvIRFY2Cf4FnD0wRs+nQwJU8Lu99/tPFdb0VybiiMTPe3I6rQmwsqQqRBvxU+bZ/I8sg==",
-            "deprecated": "Debug versions >=3.2.0 <3.2.7 || >=4 <4.3.1 have a low-severity ReDos regression when used in a Node.js environment. It is recommended you upgrade to 3.2.7 or 4.3.1. (https://github.com/visionmedia/debug/issues/797)",
+            "version": "4.3.2",
+            "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.2.tgz",
+            "integrity": "sha512-mOp8wKcvj7XxC78zLgw/ZA+6TSgkoE2C/ienthhRD298T7UNwAg9diBpLRxC0mOezLl4B0xV7M0cCO6P/O0Xhw==",
             "dev": true,
             "dependencies": {
                 "ms": "2.1.2"
@@ -470,6 +414,12 @@
                 }
             }
         },
+        "node_modules/debug/node_modules/ms": {
+            "version": "2.1.2",
+            "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+            "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
+            "dev": true
+        },
         "node_modules/decamelize": {
             "version": "1.2.0",
             "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
@@ -507,9 +457,9 @@
             }
         },
         "node_modules/diff": {
-            "version": "4.0.2",
-            "resolved": "https://registry.npmjs.org/diff/-/diff-4.0.2.tgz",
-            "integrity": "sha512-58lmxKSA4BNyLz+HHMUzlOEpg09FV+ev6ZMe3vJihgdxzgcwZ8VoEEPmALCZG9LmqfVoNMMKpttIYTVG6uDY7A==",
+            "version": "5.0.0",
+            "resolved": "https://registry.npmjs.org/diff/-/diff-5.0.0.tgz",
+            "integrity": "sha512-/VTCrvm5Z0JGty/BWHljh+BAiw3IK+2j87NGMu8Nwc/f48WoDAC395uomO9ZD117ZOBaHmkX1oyLvkVM/aIT3w==",
             "dev": true,
             "engines": {
                 "node": ">=0.3.1"
@@ -535,6 +485,20 @@
             "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
             "dev": true
         },
+        "node_modules/err-code": {
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+            "resolved": "https://registry.npmjs.org/ssh2/-/ssh2-1.5.0.tgz",
+            "integrity": "sha512-iUmRkhH9KGeszQwDW7YyyqjsMTf4z+0o48Cp4xOwlY5LjtbIAvyd3fwnsoUZW/hXmTCRA3yt7S/Jb9uVjErVlA==",
             "requires": {
-                "ssh2-streams": "~0.4.10"
+                "asn1": "^0.2.4",
+                "bcrypt-pbkdf": "^1.0.2",
+                "cpu-features": "0.0.2",
+                "nan": "^2.15.0"
             }
         },
         "ssh2-sftp-client": {
-            "version": "5.3.2",
-            "resolved": "https://registry.npmjs.org/ssh2-sftp-client/-/ssh2-sftp-client-5.3.2.tgz",
-            "integrity": "sha512-YD38WQKleuapAZyvqRJq7PN8pC6GnzWdWcnZN4vsPXMHtZpjcg/ipBcFGtDsC5rkHp5qXgRu56WPcDUkM87FiA==",
+            "version": "7.2.1",
+            "resolved": "https://registry.npmjs.org/ssh2-sftp-client/-/ssh2-sftp-client-7.2.1.tgz",
+            "integrity": "sha512-kr5QFL+d8Ta28wGhlRqkHo812PjMhKrBK7oTaYGNHqTvXAUjxZR6SeWRXbwKASE3dh2xeDz5aXHcg01bzfAeCA==",
             "requires": {
                 "concat-stream": "^2.0.0",
-                "retry": "^0.12.0",
-                "ssh2": "^0.8.9"
-            }
-        },
-        "ssh2-streams": {
-            "version": "0.4.10",
-            "resolved": "https://registry.npmjs.org/ssh2-streams/-/ssh2-streams-0.4.10.tgz",
-            "integrity": "sha512-8pnlMjvnIZJvmTzUIIA5nT4jr2ZWNNVHwyXfMGdRJbug9TpI3kd99ffglgfSWqujVv/0gxwMsDn9j9RVst8yhQ==",
-            "requires": {
-                "asn1": "~0.2.0",
-                "bcrypt-pbkdf": "^1.0.2",
-                "streamsearch": "~0.1.2"
+                "promise-retry": "^2.0.1",
+                "ssh2": "^1.5.0"
             }
         },
-        "streamsearch": {
-            "version": "0.1.2",
-            "resolved": "https://registry.npmjs.org/streamsearch/-/streamsearch-0.1.2.tgz",
-            "integrity": "sha1-gIudDlb8Jz2Am6VzOOkpkZoanxo="
-        },
         "string_decoder": {
             "version": "0.10.31",
             "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
             "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
         },
         "string-width": {
-            "version": "2.1.1",
-            "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
-            "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+            "version": "4.2.3",
+            "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
+            "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
             "dev": true,
             "requires": {
-                "is-fullwidth-code-point": "^2.0.0",
-                "strip-ansi": "^4.0.0"
+                "emoji-regex": "^8.0.0",
+                "is-fullwidth-code-point": "^3.0.0",
+                "strip-ansi": "^6.0.1"
             }
         },
         "strip-ansi": {
-            "version": "4.0.0",
-            "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
-            "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+            "version": "6.0.1",
+            "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
+            "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
             "dev": true,
             "requires": {
-                "ansi-regex": "^3.0.0"
+                "ansi-regex": "^5.0.1"
             }
         },
         "strip-json-comments": {
@@ -3261,9 +3039,9 @@
             "dev": true
         },
         "supports-color": {
-            "version": "7.2.0",
-            "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
-            "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
+            "version": "8.1.1",
+            "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-8.1.1.tgz",
+            "integrity": "sha512-MpUEN2OodtUzxvKQl72cUF7RQ5EiHsGvSsVG0ia9c5RbWGL2CI4C7EpPS8UTBIplnlzZiNuV56w+FuNxy3ty2Q==",
             "dev": true,
             "requires": {
                 "has-flag": "^4.0.0"
@@ -3325,19 +3103,10 @@
             "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
             "dev": true
         },
-        "wide-align": {
-            "version": "1.1.3",
-            "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
-            "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
-            "dev": true,
-            "requires": {
-                "string-width": "^1.0.2 || 2"
-            }
-        },
         "workerpool": {
-            "version": "6.0.2",
-            "resolved": "https://registry.npmjs.org/workerpool/-/workerpool-6.0.2.tgz",
-            "integrity": "sha512-DSNyvOpFKrNusaaUwk+ej6cBj1bmhLcBfj80elGk+ZIo5JSkq+unB1dLKEOcNfJDZgjGICfhQ0Q5TbP0PvF4+Q==",
+            "version": "6.1.5",
+            "resolved": "https://registry.npmjs.org/workerpool/-/workerpool-6.1.5.tgz",
+            "integrity": "sha512-XdKkCK0Zqc6w3iTxLckiuJ81tiD/o5rBE/m+nXpRCB+/Sq4DqkfXZ/x0jW02DG1tGsfUGXbTJyZDP+eu67haSw==",
             "dev": true
         },
         "wrap-ansi": {
@@ -3349,64 +3118,6 @@
                 "ansi-styles": "^4.0.0",
                 "string-width": "^4.1.0",
                 "strip-ansi": "^6.0.0"
-            },
-            "dependencies": {
-                "ansi-regex": {
-                    "version": "5.0.0",
-                    "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.0.tgz",
-                    "integrity": "sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==",
-                    "dev": true
-                },
-                "ansi-styles": {
-                    "version": "4.3.0",
-                    "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.3.0.tgz",
-                    "integrity": "sha512-zbB9rCJAT1rbjiVDb2hqKFHNYLxgtk8NURxZ3IZwD3F6NtxbXZQCnnSi1Lkx+IDohdPlFp222wVALIheZJQSEg==",
-                    "dev": true,
-                    "requires": {
-                        "color-convert": "^2.0.1"
-                    }
-                },
-                "color-convert": {
-                    "version": "2.0.1",
-                    "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
-                    "integrity": "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==",
-                    "dev": true,
-                    "requires": {
-                        "color-name": "~1.1.4"
-                    }
-                },
-                "color-name": {
-                    "version": "1.1.4",
-                    "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
-                    "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
-                    "dev": true
-                },
-                "is-fullwidth-code-point": {
-                    "version": "3.0.0",
-                    "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz",
-                    "integrity": "sha512-zymm5+u+sCsSWyD9qNaejV3DFvhCKclKdizYaJUuHA83RLjb7nSuGnddCHGv0hk+KY7BMAlsWeK4Ueg6EV6XQg==",
-                    "dev": true
-                },
-                "string-width": {
-                    "version": "4.2.0",
-                    "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.0.tgz",
-                    "integrity": "sha512-zUz5JD+tgqtuDjMhwIg5uFVV3dtqZ9yQJlZVfq4I01/K5Paj5UHj7VyrQOJvzawSVlKpObApbfD0Ed6yJc+1eg==",
-                    "dev": true,
-                    "requires": {
-                        "emoji-regex": "^8.0.0",
-                        "is-fullwidth-code-point": "^3.0.0",
-                        "strip-ansi": "^6.0.0"
-                    }
-                },
-                "strip-ansi": {
-                    "version": "6.0.0",
-                    "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.0.tgz",
-                    "integrity": "sha512-AuvKTrTfQNYNIctbR1K/YGTR1756GycPsg7b9bdV9Duqur4gv6aKqHXah67Z8ImS7WEz5QVcOtlfW2rZEugt6w==",
-                    "dev": true,
-                    "requires": {
-                        "ansi-regex": "^5.0.0"
-                    }
-                }
             }
         },
         "wrappy": {
@@ -3445,12 +3156,6 @@
                 "yargs-parser": "^18.1.2"
             },
             "dependencies": {
-                "ansi-regex": {
-                    "version": "5.0.0",
-                    "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.0.tgz",
-                    "integrity": "sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==",
-                    "dev": true
-                },
                 "find-up": {
                     "version": "4.1.0",
                     "resolved": "https://registry.npmjs.org/find-up/-/find-up-4.1.0.tgz",
@@ -3461,12 +3166,6 @@
                         "path-exists": "^4.0.0"
                     }
                 },
-                "is-fullwidth-code-point": {
-                    "version": "3.0.0",
-                    "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-3.0.0.tgz",
-                    "integrity": "sha512-zymm5+u+sCsSWyD9qNaejV3DFvhCKclKdizYaJUuHA83RLjb7nSuGnddCHGv0hk+KY7BMAlsWeK4Ueg6EV6XQg==",
-                    "dev": true
-                },
                 "locate-path": {
                     "version": "5.0.0",
                     "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-5.0.0.tgz",
@@ -3491,26 +3190,6 @@
                     "integrity": "sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==",
                     "dev": true
                 },
-                "string-width": {
-                    "version": "4.2.0",
-                    "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.0.tgz",
-                    "integrity": "sha512-zUz5JD+tgqtuDjMhwIg5uFVV3dtqZ9yQJlZVfq4I01/K5Paj5UHj7VyrQOJvzawSVlKpObApbfD0Ed6yJc+1eg==",
-                    "dev": true,
-                    "requires": {
-                        "emoji-regex": "^8.0.0",
-                        "is-fullwidth-code-point": "^3.0.0",
-                        "strip-ansi": "^6.0.0"
-                    }
-                },
-                "strip-ansi": {
-                    "version": "6.0.0",
-                    "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.0.tgz",
-                    "integrity": "sha512-AuvKTrTfQNYNIctbR1K/YGTR1756GycPsg7b9bdV9Duqur4gv6aKqHXah67Z8ImS7WEz5QVcOtlfW2rZEugt6w==",
-                    "dev": true,
-                    "requires": {
-                        "ansi-regex": "^5.0.0"
-                    }
-                },
                 "yargs-parser": {
                     "version": "18.1.3",
                     "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-18.1.3.tgz",
@@ -3524,14 +3203,10 @@
             }
         },
         "yargs-parser": {
-            "version": "13.1.2",
-            "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.2.tgz",
-            "integrity": "sha512-3lbsNRf/j+A4QuSZfDRA7HRSfWrzO0YjqTJd5kjAq37Zep1CEgaYmrH9Q3GwPiB9cHyd1Y1UwggGhJGoxipbzg==",
-            "dev": true,
-            "requires": {
-                "camelcase": "^5.0.0",
-                "decamelize": "^1.2.0"
-            }
+            "version": "20.2.4",
+            "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.4.tgz",
+            "integrity": "sha512-WOkpgNhPTlE73h4VFAFsOnomJVaovO8VqLDzy5saChRBFQFBoMYirowyW+Q9HB4HFF4Z7VZTiG3iSzJJA29yRA==",
+            "dev": true
         },
         "yargs-unparser": {
             "version": "2.0.0",
diff --git a/package.json b/package.json
index 3f42d9b..751c07e 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
     "name": "ftp-deploy",
-    "version": "2.4.1",
-    "author": "Simon Hampton",
+    "version": "2.5.0",
+    "author": "Pascal GANAYE",
     "description": "Ftp a folder from your local disk to an ftp destination",
     "main": "src/ftp-deploy",
     "scripts": {
@@ -10,17 +10,18 @@
     },
     "dependencies": {
         "bluebird": "^3.7.2",
-        "minimatch": "3.0.4",
+        "memory-streams": "^0.1.3",
+        "minimatch": "^3.0.4",
         "promise-ftp": "^1.3.5",
         "read": "^1.0.7",
-        "ssh2-sftp-client": "^5.3.2",
+        "ssh2-sftp-client": "^7.2.1",
         "upath": "^2.0.1"
     },
     "devDependencies": {
-        "chai": "^4.3.0",
+        "chai": "^4.3.4",
         "delete": "^1.1.0",
-        "ftp-srv": "^4.4.0",
-        "mocha": "^8.2.1"
+        "ftp-srv": "^4.5.0",
+        "mocha": "^9.1.3"
     },
     "keywords": [
         "ftp",
@@ -53,4 +54,4 @@
     "prettier": {
         "tabWidth": 4
     }
-}
\ No newline at end of file
+}
diff --git a/src/ftp-deploy.js b/src/ftp-deploy.js
index 0b23da6..43cd4a3 100644
--- a/src/ftp-deploy.js
+++ b/src/ftp-deploy.js
@@ -5,10 +5,13 @@ const util = require("util");
 const events = require("events");
 const Promise = require("bluebird");
 const fs = require("fs");
+const os = require("os");
+const memoryStreams = require('memory-streams');
 
 var PromiseFtp = require("promise-ftp");
 var PromiseSftp = require("ssh2-sftp-client");
 const lib = require("./lib");
+const path = require('path');
 
 /* interim structure
 {
@@ -38,6 +41,69 @@ const FtpDeployer = function () {
         });
     };
 
+
+    this.downloadFilemap = function (remoteRoot, filemapName) {
+        return new Promise((resolve, reject) => {
+            this.ftp
+                .cwd(remoteRoot)
+                .then(() => this.ftp.get(filemapName))
+                .then((stream) => {
+                    var writer = new memoryStreams.WritableStream();
+                    stream.pipe(writer)
+                    stream.on('pause', () => {
+                        // I am not entirely sure while memory stream don't eat this 
+                        stream.resume();
+                    });
+                    stream.on('finish', (data, bcd) => {
+                        try {
+                            let obj = JSON.parse(writer.toString());
+                            resolve(obj?.filemap);
+                        } catch (error) {
+                            console.log("Invalid file-map")
+                            // we will upload everything
+                            resolve();
+                        }
+                    })
+                })
+                .catch((e) => {
+                    // probably file not found we resolve to undefined.
+                    resolve()
+                });
+        });
+
+    }
+
+    this.pruneFilemap = function (localFilemap, remoteFilemap, filemapToUpload) {
+        let filesAlreadyUploaded = 0;
+        let filesToUpload = 0;
+        if (!remoteFilemap) remoteFilemap = {};
+        for (let folder of Object.keys(localFilemap)) {
+            let previousFiles = remoteFilemap[folder] || [];
+            filemapToUpload[folder] = localFilemap[folder].filter(newFile => {
+                let previousFile = previousFiles.filter(previousFile => newFile.name == previousFile.name)[0];
+                let keep = (!previousFile || previousFile.mtime != newFile.mtime);
+                if (keep) filesAlreadyUploaded += 1;
+                else filesToUpload += 1;
+                return keep;
+            }).map(f => f.name);
+        }
+        this.emit("log", "files already uploaded", filesAlreadyUploaded);
+        this.emit("log", "files to upload", filesToUpload);
+    }
+
+    this.uploadFileMap = function (remoteRoot, filemapName, filemap) {
+        let filemapBuffer = Buffer.from(JSON.stringify({
+            date: new Date(),
+            user: os.userInfo().username,
+            client: os.hostname(),
+            filemap
+        }), "utf-8");
+        return this.ftp
+            .cwd(remoteRoot)
+            .then(() => this.ftp.put(filemapBuffer, filemapName));
+    }
+
+
     this.makeDir = function (newDirectory) {
         if (newDirectory === "/") {
             return Promise.resolve("unused");
@@ -78,7 +144,6 @@ const FtpDeployer = function () {
     // connects to the server, Resolves the config on success
     this.connect = (config) => {
         this.ftp = config.sftp ? new PromiseSftp() : new PromiseFtp();
-
         // sftp client does not provide a connection status
         // so instead provide one ourselfs
         if (config.sftp) {
@@ -124,20 +189,34 @@ const FtpDeployer = function () {
     // creates list of all files to upload and starts upload process
     this.checkLocalAndUpload = (config) => {
         try {
-            let filemap = lib.parseLocal(
+            let localFilemap = lib.parseLocal(
                 config.include,
                 config.exclude,
                 config.localRoot,
-                "/"
+                "/",
+                config.updateNewerFiles
             );
-            // console.log(filemap);
-            this.emit(
-                "log",
-                "Files found to upload: " + JSON.stringify(filemap)
-            );
-            this.eventObject["totalFilesCount"] = lib.countFiles(filemap);
+            let filemapName = config.filemapName || ".ftp-deploy-file-map.json"
+
+            let uploadFiles = (filemap) => {
+                // console.log(filemap);
+                this.emit("log",
+                    "Files found to upload: " + JSON.stringify(filemap)
+                );
+                this.eventObject["totalFilesCount"] = lib.countFiles(filemap);
+
+                return this.makeAllAndUpload(config, filemap);
+                return result;
+            };
+
+            if (config.updateNewerFiles) {
+                let filemapToUpload = {};
+                return this.downloadFilemap(config.remoteRoot, filemapName)
+                    .then((remoteFilemap) => this.pruneFilemap(localFilemap, remoteFilemap, filemapToUpload))
+                    .then(() => uploadFiles(filemapToUpload))
+                    .then(() => this.uploadFileMap(config.remoteRoot, filemapName, localFilemap));
+            } else return uploadFiles(localFilemap);
 
-            return this.makeAllAndUpload(config, filemap);
         } catch (e) {
             return Promise.reject(e);
         }
@@ -157,7 +236,7 @@ const FtpDeployer = function () {
                     this.emit(
                         "log",
                         "Deleting failed, trying to continue: " +
-                            JSON.stringify(err)
+                        JSON.stringify(err)
                     );
                     return Promise.resolve(config);
                 });
diff --git a/src/ftp-deploy.spec.js b/src/ftp-deploy.spec.js
index 932daa1..f3b0a62 100644
--- a/src/ftp-deploy.spec.js
+++ b/src/ftp-deploy.spec.js
@@ -4,31 +4,33 @@ const path = require("path");
 const fs = require("fs");
 const utils = require("util");
 
-// var assert = require("assert");
+const assert = require("assert");
 
 const statP = utils.promisify(fs.stat);
 
 const del = require("delete");
 const FtpDeploy = require("./ftp-deploy");
 
-const config = {
-    user: "anonymous",
-    password: "anon", // Optional, prompted if none given
-    host: "localhost",
-    port: 2121,
-    localRoot: path.join(__dirname, "../test/local"),
-    remoteRoot: "/ftp",
-    exclude: [],
-    include: ["folderA/**/*", "test-inside-root.txt"],
-    debugMode: true
-};
+function newTestConfig() {
+    return {
+        user: "anonymous",
+        password: "anon", // Optional, prompted if none given
+        host: "localhost",
+        port: 2121,
+        localRoot: path.join(__dirname, "../test/local"),
+        remoteRoot: "/ftp",
+        exclude: [],
+        include: ["folderA/**/*", "test-inside-root.txt"],
+        debugMode: true
+    };
+}
 
 describe("deploy tests", () => {
     const remoteDir = path.join(__dirname, "../test/remote/ftp");
 
     it("should fail if badly configured", () => {
         const d = new FtpDeploy();
-        const configError = Object.assign({}, config, { port: 212 });
+        const configError = Object.assign({}, newTestConfig(), { port: 212 });
         return del(remoteDir)
             .then(() => {
                 return d.deploy(configError);
@@ -46,7 +48,7 @@ describe("deploy tests", () => {
         const d = new FtpDeploy();
         return del(remoteDir)
             .then(() => {
-                let c2 = Object.assign({}, config, { include: [] });
+                let c2 = Object.assign({}, newTestConfig(), { include: [] });
                 return d.deploy(c2);
             })
             .catch(err => {
@@ -61,16 +63,19 @@ describe("deploy tests", () => {
         const d = new FtpDeploy();
         return del(remoteDir)
             .then(() => {
-                return d.deploy(config);
+                return d.deploy(newTestConfig());
             })
             .then(() => {
                 // Should reject if file does not exist
                 return statP(remoteDir + "/test-inside-root.txt");
             })
-            .catch(err => done(err));
+            .catch(err => {
+                throw err;
+            });
     });
     it("should put a dot file", () => {
         const d = new FtpDeploy();
+        const config = newTestConfig();
         return del(remoteDir)
             .then(() => {
                 config.include = [".*"];
@@ -81,4 +86,35 @@ describe("deploy tests", () => {
                 return statP(remoteDir + "/.testfile");
             });
     });
+    it("should put modified files again", () => {
+        const ftpDeploy = new FtpDeploy();
+        const config = newTestConfig();
+        config.updateNewerFiles = true;
+
+        const filesUploaded = [];
+        ftpDeploy.on("uploading", function (data) {
+            filesUploaded.push(data.filename);
+        });
+        return del(remoteDir)
+            .then(() => {
+                return ftpDeploy.deploy(config);
+            }).then(() => {
+                filesUploaded.length = 0;
+                return ftpDeploy.deploy(config);
+            }).then(() => {
+                assert(filesUploaded.length == 0);
+                // modify a single file")
+                fs.writeFileSync(path.resolve(__dirname, '../test/local/test-inside-root.txt'), "modified test inside root\r\n");
+                filesUploaded.length = 0;
+                return ftpDeploy.deploy(config);
+            }).then(() => {
+                assert(filesUploaded.length == 1);
+                // revert single file
+                fs.writeFileSync(path.resolve(__dirname, '../test/local/test-inside-root.txt'), "test inside root\r\n");
+                filesUploaded.length = 0;
+                return ftpDeploy.deploy(config);
+            }).then(() => {
+                assert(filesUploaded.length == 1);
+            });
+    });
 });
diff --git a/src/lib.js b/src/lib.js
index 8d66eb1..c9a6c69 100644
--- a/src/lib.js
+++ b/src/lib.js
@@ -64,15 +64,15 @@ function canIncludePath(includes, excludes, filePath) {
 }
 
 // A method for parsing the source location and storing the information into a suitably formated object
-function parseLocal(includes, excludes, localRootDir, relDir) {
+function parseLocal(includes, excludes, localRootDir, relDir, collectFilesSize) {
     // reducer
-    let handleItem = function(acc, item) {
+    let handleItem = function (acc, item) {
         const currItem = path.join(fullDir, item);
         const newRelDir = path.relative(localRootDir, currItem);
-
-        if (fs.lstatSync(currItem).isDirectory()) {
+        const stats = fs.lstatSync(currItem);
+        if (stats.isDirectory()) {
             // currItem is a directory. Recurse and attach to accumulator
-            let tmp = parseLocal(includes, excludes, localRootDir, newRelDir);
+            let tmp = parseLocal(includes, excludes, localRootDir, newRelDir, collectFilesSize);
             for (let key in tmp) {
                 if (tmp[key].length == 0) {
                     delete tmp[key];
@@ -84,7 +84,7 @@ function parseLocal(includes, excludes, localRootDir, relDir) {
             // acc[relDir] is always created at previous iteration
             if (canIncludePath(includes, excludes, newRelDir)) {
                 // console.log("including", currItem);
-                acc[relDir].push(item);
+                acc[relDir].push(collectFilesSize ? { name: item, mtime: stats.mtimeMs } : item);
                 return acc;
             }
         }
@@ -107,8 +107,7 @@ function parseLocal(includes, excludes, localRootDir, relDir) {
 }
 
 function countFiles(filemap) {
-    return Object.values(filemap).reduce((acc, item) => acc.concat(item))
-        .length;
+    return Object.values(filemap).reduce((acc, item) => acc.concat(item), []).length;
 }
 
 function deleteDir(ftp, dir) {
diff --git a/src/lib.spec.js b/src/lib.spec.js
index e8446ec..eb2a200 100644
--- a/src/lib.spec.js
+++ b/src/lib.spec.js
@@ -87,27 +87,44 @@ describe("dirParseSync", () => {
                 rootDir,
                 "/"
             ),
-            { "/": [],  src: [ 'index.js' ] }
+            { "/": [], src: ['index.js'] }
         );
     });
     it("should traverse test directory", () => {
         const rootDir = path.join(__dirname, "../test/local");
-        let exp2 = Object.assign(exp, {
-            "folderA/folderB/FolderC": ["test-inside-c.txt"]
-        });
+
+        let exp;
+        if (path.sep == '\\') {
+            exp = {
+                "\\": ["test-inside-root.txt"],
+                folderA: ["test-inside-a.txt"],
+                "folderA\\folderB": ["test-inside-b.txt"],
+                "folderA\\folderB\\emptyC\\folderD": [
+                    "test-inside-d-1.txt",
+                    "test-inside-d-2.txt"
+                ],
+                "folderA\\folderB\\FolderC": ["test-inside-c.txt"]
+            };
+
+        } else {
+            exp = {
+                "/": ["test-inside-root.txt"],
+                folderA: ["test-inside-a.txt"],
+                "folderA/folderB": ["test-inside-b.txt"],
+                "folderA/folderB/emptyC/folderD": [
+                    "test-inside-d-1.txt",
+                    "test-inside-d-2.txt"
+                ],
+                "folderA/folderB/FolderC": ["test-inside-c.txt"]
+            };
+        }
         assert.deepEqual(
-            lib.parseLocal(["*"], [".excludeme/**/*"], rootDir, "/"),
-            exp2
+            lib.parseLocal(["*"], [".excludeme/**/*"], rootDir, path.sep),
+            exp
         );
+        // The test now pass in windows, I reckon this is wong though.
+        // I expect the library should only work with forward slash separator as it standard in the FTP world.  
     });
 });
 
-let exp = {
-    "/": ["test-inside-root.txt"],
-    folderA: ["test-inside-a.txt"],
-    "folderA/folderB": ["test-inside-b.txt"],
-    "folderA/folderB/emptyC/folderD": [
-        "test-inside-d-1.txt",
-        "test-inside-d-2.txt"
-    ]
-};
+
diff --git a/test/server.js b/test/server.js
index 0321fd4..d201b7c 100644
--- a/test/server.js
+++ b/test/server.js
@@ -1,8 +1,9 @@
+const path = require("path");
 const FtpSrv = require("ftp-srv");
 
 // Using non-standard port
 const port = 2121;
-const homeDir = require("os").homedir() + "/code/nodejs/ftp-deploy/test/remote";
+const homeDir = path.join(__dirname, 'remote');
 console.log("serving", homeDir);
 
 const options = {
diff --git a/test/test2/.should-be-ignored.txt b/test/test2/.should-be-ignored.txt
new file mode 100644
index 0000000..e69de29
diff --git a/test/test2/src/index.js b/test/test2/src/index.js
new file mode 100644
index 0000000..b2d525b
--- /dev/null
+++ b/test/test2/src/index.js
@@ -0,0 +1 @@
+index
\ No newline at end of file