diff --git a/tsconfigs/tsconfig-common.json b/tsconfigs/tsconfig-common.json
index fce2565..c797266 100644
--- a/tsconfigs/tsconfig-common.json
+++ b/tsconfigs/tsconfig-common.json
@@ -26,7 +26,7 @@
     "noImplicitThis": true,
     "alwaysStrict": true,
     "strictNullChecks": true,
-    "strictFunctionTypes": false,
+    "strictFunctionTypes": true,
     "noImplicitReturns": true,
     "noFallthroughCasesInSwitch": true,
     "noUnusedLocals": true,