diff --git a/infra/ci/requirements.txt b/infra/ci/requirements.txt
index 310ba53e8..ae009eda0 100644
--- a/infra/ci/requirements.txt
+++ b/infra/ci/requirements.txt
@@ -1,6 +1,6 @@
 # Requirements for submitting code changes to infra/ (needed by presubmit.py).
 parameterized==0.7.4
-pyfakefs==4.1.0
+pyfakefs==4.5.6
 pylint==2.5.3
 pytest==6.2.1
 pytest-xdist==2.2.0