diff --git a/requirements-tests.txt b/requirements-tests.txt
index 52d56b5ed1fd..74aa7a0c32e0 100644
--- a/requirements-tests.txt
+++ b/requirements-tests.txt
@@ -1,7 +1,7 @@
 # Type checkers that we test our stubs against. These should always
 # be pinned to a specific version to make failure reproducible.
 mypy==2.4.0
-pyrefly==1.3.2
+pyrefly==1.4.0
 pyright==1.1.414
 ty==0.0.87