diff --git a/src/CompletionProvider.php b/src/CompletionProvider.php
index 760c1e5..0c160aa 100644
--- a/src/CompletionProvider.php
+++ b/src/CompletionProvider.php
@@ -68,6 +68,7 @@ class CompletionProvider
         'list',
         'namespace',
         'new',
+        'null',
         'or',
         'print',
         'private',