diff --git a/later/tsconfig.json b/later/tsconfig.json
index 78a6cefd34..add4a07667 100644
--- a/later/tsconfig.json
+++ b/later/tsconfig.json
@@ -7,7 +7,7 @@
         ],
         "noImplicitAny": true,
         "noImplicitThis": true,
-        "strictNullChecks": false,
+        "strictNullChecks": true,
         "baseUrl": "../",
         "typeRoots": [
             "../"