diff --git a/test_requirements.txt b/test_requirements.txt
index 164c3f9970..d1aa5821dc 100644
--- a/test_requirements.txt
+++ b/test_requirements.txt
@@ -17,7 +17,7 @@ beautifulsoup4==4.9.3
 wget==3.2
 filelock==3.0.12
 wsgidav==3.1.0
-crc32c==2.2
+crc32c==2.2.post0
 xmltodict==0.12.0
 google-compute-engine==2.8.13
 google-cloud-storage==1.39.0