diff --git a/js/package-lock.json b/js/package-lock.json
index cee8185b19e..0ff70ac93d3 100644
--- a/js/package-lock.json
+++ b/js/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "apache-arrow",
-  "version": "2.0.0-SNAPSHOT",
+  "version": "3.0.0-SNAPSHOT",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -7111,9 +7111,9 @@
       "dev": true
     },
     "flatbuffers": {
-      "version": "1.11.0",
-      "resolved": "https://registry.npmjs.org/flatbuffers/-/flatbuffers-1.11.0.tgz",
-      "integrity": "sha512-0PqFKtXI4MjxomI7jO4g5XfLPm/15g2R+5WGCHBGYGh0ihQiypnHlJ6bMmkkrAe0GzZ4d7PDAfCONKIPUxNF+A=="
+      "version": "1.12.0",
+      "resolved": "https://registry.npmjs.org/flatbuffers/-/flatbuffers-1.12.0.tgz",
+      "integrity": "sha512-c7CZADjRcl6j0PlvFy0ZqXQ67qSEZfrVPynmnL+2zPc+NtMvrF8Y0QceMo7QqnSPc7+uWjUIAbvCQ5WIKlMVdQ=="
     },
     "flush-write-stream": {
       "version": "1.1.1",
diff --git a/js/package.json b/js/package.json
index 6029c92fef9..602bdd0be03 100644
--- a/js/package.json
+++ b/js/package.json
@@ -62,7 +62,7 @@
     "@types/text-encoding-utf-8": "^1.0.1",
     "command-line-args": "5.0.2",
     "command-line-usage": "5.0.5",
-    "flatbuffers": "1.11.0",
+    "flatbuffers": "1.12.0",
     "json-bignum": "^0.0.3",
     "pad-left": "^2.1.0",
     "text-encoding-utf-8": "^1.0.2",