diff --git a/tsconfig.json b/tsconfig.json
index 2946361f..949c9386 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,6 +5,7 @@
     "module": "commonjs",
     "target": "es2015",
     "noImplicitAny": true,
+    "strictNullChecks": true,
     "experimentalDecorators": true,
     "declaration": true,
     "preserveConstEnums": true,