diff --git a/package.json b/package.json
index e02848d..2ea02b8 100644
--- a/package.json
+++ b/package.json
@@ -25,10 +25,10 @@
   },
   "homepage": "https://github.com/pedronauck/algorithms-with-js",
   "devDependencies": {
-    "6to5": "^1.10.8",
-    "gulp": "^3.8.8",
-    "gulp-6to5": "^1.0.1",
-    "jest": "^0.1.37",
-    "jest-cli": "^0.1.18"
+    "6to5": "^3.6.5",
+    "gulp": "^3.9.0",
+    "gulp-6to5": "^3.0.0",
+    "jest": "^0.1.40",
+    "jest-cli": "^0.5.8"
   }
 }