diff --git a/package.json b/package.json
index 89b3fb8..96d7653 100644
--- a/package.json
+++ b/package.json
@@ -26,17 +26,17 @@
     "chalk": "^2.0.0"
   },
   "devDependencies": {
-    "@aureooms/js-compare": "^1.4.5",
-    "@aureooms/js-itertools": "^3.1.1",
-    "@aureooms/js-random": "^2.0.0",
-    "ava": "^0.20.0",
-    "babel-cli": "^6.22.2",
-    "babel-polyfill": "^6.22.0",
-    "babel-preset-latest": "^6.22.0",
-    "codeclimate-test-reporter": "^0.4.0",
-    "coveralls": "^2.11.15",
-    "esdoc": "^0.5.2",
-    "nyc": "^11.0.0"
+    "@aureooms/js-compare": "1.4.5",
+    "@aureooms/js-itertools": "3.4.0",
+    "@aureooms/js-random": "2.0.0",
+    "ava": "0.20.0",
+    "babel-cli": "6.26.0",
+    "babel-polyfill": "6.26.0",
+    "babel-preset-latest": "6.24.1",
+    "codeclimate-test-reporter": "0.4.1",
+    "coveralls": "2.13.3",
+    "esdoc": "0.5.2",
+    "nyc": "11.9.0"
   },
   "homepage": "https://aureooms.github.io/js-red-black-tree",
   "keywords": [