diff --git a/tsconfig.json b/tsconfig.json
index 6c4a667..12e6dfc 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -12,6 +12,7 @@
 
     /* Strictness */
     "strict": true,
+    "strictNullChecks": true,
     "noUncheckedIndexedAccess": true,
     "checkJs": true,