diff --git a/package.json b/package.json
index fc37d2598..767b9fb74 100644
--- a/package.json
+++ b/package.json
@@ -33,16 +33,17 @@
     "aurelia-polyfills": "^1.0.0",
     "esprima": "^4.0.0",
     "glob": "^7.1.1",
+    "gulp": "^4.0.0",
     "npm": "^3.10.8",
     "npm-which": "^3.0.1",
     "preprocess": "^3.1.0",
     "rfc6902": "^1.2.2",
-    "semver": "^5.3.0"
+    "semver": "^5.3.0",
+    "typescript": "^2.0.0"
   },
   "devDependencies": {
     "aurelia-tools": "^0.2.4",
     "babel-eslint": "^7.1.1",
-    "gulp": "^3.9.1",
     "gulp-bump": "^2.7.0",
     "gulp-conventional-changelog": "^1.1.3",
     "gulp-eslint": "^3.0.1",