diff --git a/package.json b/package.json
index 2e794c05..45783d5a 100644
--- a/package.json
+++ b/package.json
@@ -33,12 +33,12 @@
   "devDependencies": {
     "ansi": "^0.3.1",
     "benchmark": "^2.1.4",
-    "browserify": "^14.3.0",
+    "browserify": "^16.2.2",
     "codemirror": "^5.13.4",
     "eslint": "^4.1.1",
-    "fast-check": "0.0.13",
+    "fast-check": "1.1.3",
     "istanbul": "^0.4.5",
-    "mocha": "^3.3.0",
+    "mocha": "^5.2.0",
     "uglify-js": "^3.0.1"
   },
   "scripts": {