diff --git a/package.json b/package.json
index 61f9183..d18f63a 100644
--- a/package.json
+++ b/package.json
@@ -17,8 +17,8 @@
   "author": "Kornel Lesiński <kornel@geekhood.net> (https://kornel.ski/)",
   "license": "BSD-2-Clause",
   "devDependencies": {
-    "babel-cli": "^6.24.0",
-    "babel-preset-env": "^1.3.2",
-    "mocha": "^3.2.0"
+    "babel-cli": "^6.24.1",
+    "babel-preset-env": "^1.5.2",
+    "mocha": "^3.4.2"
   }
 }