diff --git a/setup.cfg b/setup.cfg
index 786864b..2d2a4c2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -45,7 +45,7 @@ tests =
     mock==4.0.3
     wget==3.2
     filelock==3.3.2
-    crc32c==2.2.post0
+    crc32c==2.3
     xmltodict==0.12.0
     # required by collective.checkdocs
     Pygments==2.10.0