diff --git a/backend/tsconfig.json b/backend/tsconfig.json
index 79c8ff51b..1375f2545 100644
--- a/backend/tsconfig.json
+++ b/backend/tsconfig.json
@@ -12,7 +12,8 @@
     "allowSyntheticDefaultImports": true,
     "esModuleInterop": true,
     "strictNullChecks": true,
-    "skipLibCheck": false
+    "skipLibCheck": false,
+    "noImplicitReturns": true
   },
   "ts-node": {
     "files": true