diff --git a/contract/tsconfig.json b/contract/tsconfig.json
index 4fcad6b..512fc3a 100644
--- a/contract/tsconfig.json
+++ b/contract/tsconfig.json
@@ -4,7 +4,7 @@
     "module": "esnext",
     "moduleResolution": "bundler",
     "lib": ["ESNext", "DOM"],
-    "checkJs": false,
+    "checkJs": true,
     "strict": true,
     "noImplicitAny": false,
     "useUnknownInCatchVariables": false,