diff --git a/types/iron/tsconfig.json b/types/iron/tsconfig.json
index 090685c604..bddeeac5c0 100644
--- a/types/iron/tsconfig.json
+++ b/types/iron/tsconfig.json
@@ -4,7 +4,10 @@
         "lib": [
             "es6"
         ],
-        "strict": true,
+        "noImplicitAny": true,
+        "noImplicitThis": true,
+        "strictNullChecks": true,
+        "strictFunctionTypes": true,
         "baseUrl": "../",
         "typeRoots": [
             "../"