diff --git a/package.json b/package.json
index 50451b91..7b2b7eb8 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,6 @@
     "changelog": "node ./node_modules/conventional-changelog-cli/cli.js -p angular -i doc/CHANGELOG.md -s"
   },
   "devDependencies": {
-    "@types/chai": "^3.4.33",
     "conventional-changelog-cli": "^1.2.0",
     "tslint": "^3.15.1",
     "typescript": "^2.0.3",
diff --git a/tsconfig.json b/tsconfig.json
index c325d71c..6f6ff9b7 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -10,7 +10,6 @@
     "moduleResolution" : "node",
     "lib": ["es2015"],
     "types" : [
-      "chai"
     ]
   },
   "exclude": [