diff --git a/index.js b/index.js
index 9938fda..a49e1fc 100644
--- a/index.js
+++ b/index.js
@@ -6,6 +6,7 @@
 var client = require('redis').createClient;
 var parser = require('socket.io-parser');
 var msgpack = require('notepack.io');
+var hasBin = require('has-binary2');
 var debug = require('debug')('socket.io-emitter');
 
 /**
@@ -123,7 +124,7 @@ Emitter.prototype.of = function(nsp){
 Emitter.prototype.emit = function(){
   // packet
   var args = Array.prototype.slice.call(arguments);
-  var packet = { type: parser.EVENT, data: args, nsp: this.nsp };
+  var packet = { type: hasBin(args) ? parser.BINARY_EVENT : parser.EVENT, data: args, nsp: this.nsp };
 
   var opts = {
     rooms: this._rooms,
diff --git a/package-lock.json b/package-lock.json
index 418a0f3..fedb91f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,30 +4,6 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
-    "@types/component-emitter": {
-      "version": "1.2.10",
-      "resolved": "https://registry.npmjs.org/@types/component-emitter/-/component-emitter-1.2.10.tgz",
-      "integrity": "sha512-bsjleuRKWmGqajMerkzox19aGbscQX5rmmvvXl3wlIp5gMG1HgkiwPxsN5p070fBDKTNSPgojVbuY1+HWMbFhg==",
-      "dev": true
-    },
-    "@types/cookie": {
-      "version": "0.4.0",
-      "resolved": "https://registry.npmjs.org/@types/cookie/-/cookie-0.4.0.tgz",
-      "integrity": "sha512-y7mImlc/rNkvCRmg8gC3/lj87S7pTUIJ6QGjwHR9WQJcFs+ZMTOaoPrkdFA/YdbuqVEmEbb5RdhVxMkAcgOnpg==",
-      "dev": true
-    },
-    "@types/cors": {
-      "version": "2.8.9",
-      "resolved": "https://registry.npmjs.org/@types/cors/-/cors-2.8.9.tgz",
-      "integrity": "sha512-zurD1ibz21BRlAOIKP8yhrxlqKx6L9VCwkB5kMiP6nZAhoF5MvC7qS1qPA7nRcr1GJolfkQC7/EAL4hdYejLtg==",
-      "dev": true
-    },
-    "@types/node": {
-      "version": "14.14.16",
-      "resolved": "https://registry.npmjs.org/@types/node/-/node-14.14.16.tgz",
-      "integrity": "sha512-naXYePhweTi+BMv11TgioE2/FXU4fSl29HAH1ffxVciNsH3rYXjNP2yM8wqmSm7jS20gM8TIklKiTen+1iVncw==",
-      "dev": true
-    },
     "accepts": {
       "version": "1.3.7",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
@@ -38,6 +14,24 @@
         "negotiator": "0.6.2"
       }
     },
+    "after": {
+      "version": "0.8.2",
+      "resolved": "https://registry.npmjs.org/after/-/after-0.8.2.tgz",
+      "integrity": "sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8=",
+      "dev": true
+    },
+    "arraybuffer.slice": {
+      "version": "0.0.7",
+      "resolved": "https://registry.npmjs.org/arraybuffer.slice/-/arraybuffer.slice-0.0.7.tgz",
+      "integrity": "sha512-wGUIVQXuehL5TCqQun8OW81jGzAWycqzFF8lFp+GOM5BXLYj3bKNsYC4daB7n6XjCqxQA/qgTJ+8ANR3acjrog==",
+      "dev": true
+    },
+    "async-limiter": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.1.tgz",
+      "integrity": "sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ==",
+      "dev": true
+    },
     "backo2": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/backo2/-/backo2-1.0.2.tgz",
@@ -62,6 +56,21 @@
       "integrity": "sha512-lGe34o6EHj9y3Kts9R4ZYs/Gr+6N7MCaMlIFA3F1R2O5/m7K06AxfSeO5530PEERE6/WyEg3lsuyw4GHlPZHog==",
       "dev": true
     },
+    "better-assert": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/better-assert/-/better-assert-1.0.2.tgz",
+      "integrity": "sha1-QIZrnhueC1W0gYlDEeaPr/rrxSI=",
+      "dev": true,
+      "requires": {
+        "callsite": "1.0.0"
+      }
+    },
+    "blob": {
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/blob/-/blob-0.0.5.tgz",
+      "integrity": "sha512-gaqbzQPqOoamawKg0LGVd7SzLgXS+JH61oWprSLH+P+abTczqJbhTR8CmJ2u9/bUYNmHTGJx/UEmn6doAvvuig==",
+      "dev": true
+    },
     "brace-expansion": {
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
@@ -78,6 +87,12 @@
       "integrity": "sha1-81HTKWnTL6XXpVZxVCY9korjvR8=",
       "dev": true
     },
+    "callsite": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/callsite/-/callsite-1.0.0.tgz",
+      "integrity": "sha1-KAOY5dZkvXQDi28JBRU+borxvCA=",
+      "dev": true
+    },
     "commander": {
       "version": "2.9.0",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.9.0.tgz",
@@ -98,6 +113,12 @@
       "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.2.1.tgz",
       "integrity": "sha1-E3kY1teCg/ffemt8WmPhQOaUJeY="
     },
+    "component-inherit": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/component-inherit/-/component-inherit-0.0.3.tgz",
+      "integrity": "sha1-ZF/ErfWLcrZJ1crmUTVhnbJv8UM=",
+      "dev": true
+    },
     "concat-map": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
@@ -105,21 +126,11 @@
       "dev": true
     },
     "cookie": {
-      "version": "0.4.1",
-      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.1.tgz",
-      "integrity": "sha512-ZwrFkGJxUR3EIoXtO+yVE69Eb7KlixbaeAWfBQB9vVsNn/o+Yw69gBWSSDK825hQNdN+wF8zELf3dFNl/kxkUA==",
+      "version": "0.3.1",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.3.1.tgz",
+      "integrity": "sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s=",
       "dev": true
     },
-    "cors": {
-      "version": "2.8.5",
-      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
-      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
-      "dev": true,
-      "requires": {
-        "object-assign": "^4",
-        "vary": "^1"
-      }
-    },
     "debug": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
@@ -153,51 +164,34 @@
       "integrity": "sha1-ED01J/0xUo9AGIEwyEHv3XgmTlw="
     },
     "engine.io": {
-      "version": "4.0.5",
-      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-4.0.5.tgz",
-      "integrity": "sha512-Ri+whTNr2PKklxQkfbGjwEo+kCBUM4Qxk4wtLqLrhH+b1up2NFL9g9pjYWiCV/oazwB0rArnvF/ZmZN2ab5Hpg==",
+      "version": "3.4.2",
+      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-3.4.2.tgz",
+      "integrity": "sha512-b4Q85dFkGw+TqgytGPrGgACRUhsdKc9S9ErRAXpPGy/CXKs4tYoHDkvIRdsseAF7NjfVwjRFIn6KTnbw7LwJZg==",
       "dev": true,
       "requires": {
         "accepts": "~1.3.4",
         "base64id": "2.0.0",
-        "cookie": "~0.4.1",
-        "cors": "~2.8.5",
+        "cookie": "0.3.1",
         "debug": "~4.1.0",
-        "engine.io-parser": "~4.0.0",
+        "engine.io-parser": "~2.2.0",
         "ws": "^7.1.2"
-      },
-      "dependencies": {
-        "debug": {
-          "version": "4.1.1",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
-          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
-          "dev": true,
-          "requires": {
-            "ms": "^2.1.1"
-          }
-        },
-        "ms": {
-          "version": "2.1.3",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
-          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
-          "dev": true
-        }
       }
     },
     "engine.io-client": {
-      "version": "4.0.5",
-      "resolved": "https://registry.npmjs.org/engine.io-client/-/engine.io-client-4.0.5.tgz",
-      "integrity": "sha512-1lkn0QdekHQPMTcxUh8LqIuxQHNtKV5GvqkQzmZ1rYKAvB6puMm13U7K1ps3OQZ4joE46asQiAKrcdL9weNEVw==",
+      "version": "3.4.4",
+      "resolved": "https://registry.npmjs.org/engine.io-client/-/engine.io-client-3.4.4.tgz",
+      "integrity": "sha512-iU4CRr38Fecj8HoZEnFtm2EiKGbYZcPn3cHxqNGl/tmdWRf60KhK+9vE0JeSjgnlS/0oynEfLgKbT9ALpim0sQ==",
       "dev": true,
       "requires": {
-        "base64-arraybuffer": "0.1.4",
         "component-emitter": "~1.3.0",
-        "debug": "~4.1.0",
-        "engine.io-parser": "~4.0.1",
+        "component-inherit": "0.0.3",
+        "debug": "~3.1.0",
+        "engine.io-parser": "~2.2.0",
         "has-cors": "1.1.0",
+        "indexof": "0.0.1",
         "parseqs": "0.0.6",
         "parseuri": "0.0.6",
-        "ws": "~7.2.1",
+        "ws": "~6.1.0",
         "xmlhttprequest-ssl": "~1.5.4",
         "yeast": "0.1.2"
       },
@@ -209,35 +203,48 @@
           "dev": true
         },
         "debug": {
-          "version": "4.1.1",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
-          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
+          "integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
           "dev": true,
           "requires": {
-            "ms": "^2.1.1"
+            "ms": "2.0.0"
           }
         },
-        "ms": {
-          "version": "2.1.3",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
-          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
+        "parseqs": {
+          "version": "0.0.6",
+          "resolved": "https://registry.npmjs.org/parseqs/-/parseqs-0.0.6.tgz",
+          "integrity": "sha512-jeAGzMDbfSHHA091hr0r31eYfTig+29g3GKKE/PPbEQ65X0lmMwlEoqmhzu0iztID5uJpZsFlUPDP8ThPL7M8w==",
           "dev": true
         },
-        "ws": {
-          "version": "7.2.5",
-          "resolved": "https://registry.npmjs.org/ws/-/ws-7.2.5.tgz",
-          "integrity": "sha512-C34cIU4+DB2vMyAbmEKossWq2ZQDr6QEyuuCzWrM9zfw1sGc0mYiJ0UnG9zzNykt49C2Fi34hvr2vssFQRS6EA==",
+        "parseuri": {
+          "version": "0.0.6",
+          "resolved": "https://registry.npmjs.org/parseuri/-/parseuri-0.0.6.tgz",
+          "integrity": "sha512-AUjen8sAkGgao7UyCX6Ahv0gIK2fABKmYjvP4xmy5JaKvcbTRueIqIPHLAfq30xJddqSE033IOMUSOMCcK3Sow==",
           "dev": true
+        },
+        "ws": {
+          "version": "6.1.4",
+          "resolved": "https://registry.npmjs.org/ws/-/ws-6.1.4.tgz",
+          "integrity": "sha512-eqZfL+NE/YQc1/ZynhojeV8q+H050oR8AZ2uIev7RU10svA9ZnJUddHcOUZTJLinZ9yEfdA2kSATS2qZK5fhJA==",
+          "dev": true,
+          "requires": {
+            "async-limiter": "~1.0.0"
+          }
         }
       }
     },
     "engine.io-parser": {
-      "version": "4.0.2",
-      "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-4.0.2.tgz",
-      "integrity": "sha512-sHfEQv6nmtJrq6TKuIz5kyEKH/qSdK56H/A+7DnAuUPWosnIZAS2NHNcPLmyjtY3cGS/MqJdZbUjW97JU72iYg==",
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-2.2.1.tgz",
+      "integrity": "sha512-x+dN/fBH8Ro8TFwJ+rkB2AmuVw9Yu2mockR/p3W8f8YtExwFgDvBDi0GWyb4ZLkpahtDGZgtr3zLovanJghPqg==",
       "dev": true,
       "requires": {
-        "base64-arraybuffer": "0.1.4"
+        "after": "0.8.2",
+        "arraybuffer.slice": "~0.0.7",
+        "base64-arraybuffer": "0.1.4",
+        "blob": "0.0.5",
+        "has-binary2": "~1.0.2"
       }
     },
     "escape-string-regexp": {
@@ -304,6 +311,12 @@
       "integrity": "sha1-nZ55MWXOAXoA8AQYxD+UKnsdEfo=",
       "dev": true
     },
+    "indexof": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/indexof/-/indexof-0.0.1.tgz",
+      "integrity": "sha1-gtwzbSMrkGIXnQWrMpOmYFn9Q10=",
+      "dev": true
+    },
     "inflight": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/inflight/-/inflight-1.0.6.tgz",
@@ -490,10 +503,10 @@
       "resolved": "https://registry.npmjs.org/notepack.io/-/notepack.io-2.1.3.tgz",
       "integrity": "sha512-AgSt+cP5XMooho1Ppn8NB3FFaVWefV+qZoZncYTUSch2GAEwlYLcIIbT5YVkMlFeNHnfwOvc4HDlbvrB5BRxXA=="
     },
-    "object-assign": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
-      "integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=",
+    "object-component": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/object-component/-/object-component-0.0.3.tgz",
+      "integrity": "sha1-8MaapQ78lbhmwYb0AKM3acsvEpE=",
       "dev": true
     },
     "once": {
@@ -506,16 +519,22 @@
       }
     },
     "parseqs": {
-      "version": "0.0.6",
-      "resolved": "https://registry.npmjs.org/parseqs/-/parseqs-0.0.6.tgz",
-      "integrity": "sha512-jeAGzMDbfSHHA091hr0r31eYfTig+29g3GKKE/PPbEQ65X0lmMwlEoqmhzu0iztID5uJpZsFlUPDP8ThPL7M8w==",
-      "dev": true
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/parseqs/-/parseqs-0.0.5.tgz",
+      "integrity": "sha1-1SCKNzjkZ2bikbouoXNoSSGouJ0=",
+      "dev": true,
+      "requires": {
+        "better-assert": "~1.0.0"
+      }
     },
     "parseuri": {
-      "version": "0.0.6",
-      "resolved": "https://registry.npmjs.org/parseuri/-/parseuri-0.0.6.tgz",
-      "integrity": "sha512-AUjen8sAkGgao7UyCX6Ahv0gIK2fABKmYjvP4xmy5JaKvcbTRueIqIPHLAfq30xJddqSE033IOMUSOMCcK3Sow==",
-      "dev": true
+      "version": "0.0.5",
+      "resolved": "https://registry.npmjs.org/parseuri/-/parseuri-0.0.5.tgz",
+      "integrity": "sha1-gCBKUNTbt3m/3G6+J3jZDkvOMgo=",
+      "dev": true,
+      "requires": {
+        "better-assert": "~1.0.0"
+      }
     },
     "path-is-absolute": {
       "version": "1.0.1",
@@ -550,76 +569,113 @@
       "integrity": "sha1-Uu0J2srBCPGmMcB+m2mUHnoZUEs="
     },
     "socket.io": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/socket.io/-/socket.io-3.0.4.tgz",
-      "integrity": "sha512-Vj1jUoO75WGc9txWd311ZJJqS9Dr8QtNJJ7gk2r7dcM/yGe9sit7qOijQl3GAwhpBOz/W8CwkD7R6yob07nLbA==",
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/socket.io/-/socket.io-2.3.0.tgz",
+      "integrity": "sha512-2A892lrj0GcgR/9Qk81EaY2gYhCBxurV0PfmmESO6p27QPrUK1J3zdns+5QPqvUYK2q657nSj0guoIil9+7eFg==",
       "dev": true,
       "requires": {
-        "@types/cookie": "^0.4.0",
-        "@types/cors": "^2.8.8",
-        "@types/node": "^14.14.7",
-        "accepts": "~1.3.4",
-        "base64id": "~2.0.0",
         "debug": "~4.1.0",
-        "engine.io": "~4.0.0",
-        "socket.io-adapter": "~2.0.3",
-        "socket.io-parser": "~4.0.1"
+        "engine.io": "~3.4.0",
+        "has-binary2": "~1.0.2",
+        "socket.io-adapter": "~1.1.0",
+        "socket.io-client": "2.3.0",
+        "socket.io-parser": "~3.4.0"
       },
       "dependencies": {
-        "component-emitter": {
-          "version": "1.3.0",
-          "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
-          "integrity": "sha512-Rd3se6QB+sO1TwqZjscQrurpEPIfO0/yYnSin6Q/rD3mOutHvUrCAhJub3r90uNb+SESBuE0QYoB90YdfatsRg==",
+        "base64-arraybuffer": {
+          "version": "0.1.5",
+          "resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz",
+          "integrity": "sha1-c5JncZI7Whl0etZmqlzUv5xunOg=",
           "dev": true
         },
-        "debug": {
-          "version": "4.1.1",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
-          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+        "socket.io-client": {
+          "version": "2.3.0",
+          "resolved": "https://registry.npmjs.org/socket.io-client/-/socket.io-client-2.3.0.tgz",
+          "integrity": "sha512-cEQQf24gET3rfhxZ2jJ5xzAOo/xhZwK+mOqtGRg5IowZsMgwvHwnf/mCRapAAkadhM26y+iydgwsXGObBB5ZdA==",
           "dev": true,
           "requires": {
-            "ms": "^2.1.1"
+            "backo2": "1.0.2",
+            "base64-arraybuffer": "0.1.5",
+            "component-bind": "1.0.0",
+            "component-emitter": "1.2.1",
+            "debug": "~4.1.0",
+            "engine.io-client": "~3.4.0",
+            "has-binary2": "~1.0.2",
+            "has-cors": "1.1.0",
+            "indexof": "0.0.1",
+            "object-component": "0.0.3",
+            "parseqs": "0.0.5",
+            "parseuri": "0.0.5",
+            "socket.io-parser": "~3.3.0",
+            "to-array": "0.1.4"
+          },
+          "dependencies": {
+            "socket.io-parser": {
+              "version": "3.3.1",
+              "resolved": "https://registry.npmjs.org/socket.io-parser/-/socket.io-parser-3.3.1.tgz",
+              "integrity": "sha512-1QLvVAe8dTz+mKmZ07Swxt+LAo4Y1ff50rlyoEx00TQmDFVQYPfcqGvIDJLGaBdhdNCecXtyKpD+EgKGcmmbuQ==",
+              "dev": true,
+              "requires": {
+                "component-emitter": "~1.3.0",
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-        "debug": "~4.1.0",
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+        "indexof": "0.0.1",
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+        "socket.io-parser": "~3.3.0",
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@@ -629,29 +685,35 @@
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-            "ms": "^2.1.1"
+            "ms": "2.0.0"
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+        "parseqs": {
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+          "resolved": "https://registry.npmjs.org/parseqs/-/parseqs-0.0.6.tgz",
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-            "debug": "~4.1.0"
+            "debug": "~3.1.0",
+            "isarray": "2.0.1"
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@@ -678,33 +740,18 @@
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+      "resolved": "https://registry.npmjs.org/socket.io-redis/-/socket.io-redis-5.4.0.tgz",
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         "debug": "~4.1.0",
         "notepack.io": "~2.2.0",
         "redis": "^3.0.0",
-        "socket.io-adapter": "~2.0.0",
+        "socket.io-adapter": "~1.1.0",
         "uid2": "0.0.3"
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@@ -743,18 +790,18 @@
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       }
     },
+    "to-array": {
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+      "resolved": "https://registry.npmjs.org/to-array/-/to-array-0.1.4.tgz",
+      "integrity": "sha1-F+bBH3PdTz10zaek/zI46a2b+JA=",
+      "dev": true
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     "uid2": {
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       "resolved": "https://registry.npmjs.org/uid2/-/uid2-0.0.3.tgz",
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-      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw=",
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diff --git a/package.json b/package.json
index 83329a9..217acd0 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
   },
   "dependencies": {
     "debug": "~4.1.0",
+    "has-binary2": "~1.0.2",
     "notepack.io": "~2.1.0",
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     "socket.io-parser": "3.1.2"
@@ -22,8 +23,8 @@
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     "mocha": "~3.2.0",
-    "socket.io": "^3.0.4",
-    "socket.io-client": "^3.0.4",
-    "socket.io-redis": "^6.0.1"
+    "socket.io": "^2.3.0",
+    "socket.io-client": "^2.3.1",
+    "socket.io-redis": "^5.4.0"
   }
 }