diff --git a/apple/tools/linker_wrapper.py b/apple/tools/linker_wrapper.py
index bf3bccb33..3c5f6f777 100644
--- a/apple/tools/linker_wrapper.py
+++ b/apple/tools/linker_wrapper.py
@@ -5,6 +5,8 @@
 # License, Version 2.0 found in the LICENSE-APACHE file in the root directory
 # of this source tree.
 
+# pyre-strict
+
 import argparse
 import enum
 import re