diff --git a/test/unit/test_tutorials/test_cb_tutorial.py b/test/unit/test_tutorials/test_cb_tutorial.py
index 2b155077..68632cb3 100644
--- a/test/unit/test_tutorials/test_cb_tutorial.py
+++ b/test/unit/test_tutorials/test_cb_tutorial.py
@@ -1,5 +1,7 @@
 # (c) Meta Platforms, Inc. and affiliates. Confidential and proprietary.
 
+# pyre-strict
+
 
 import os
 import unittest