diff --git a/pkgs/development/python-modules/bitarray/default.nix b/pkgs/development/python-modules/bitarray/default.nix
index 9ce3dbf8bd02..a301f5757d56 100644
--- a/pkgs/development/python-modules/bitarray/default.nix
+++ b/pkgs/development/python-modules/bitarray/default.nix
@@ -7,14 +7,14 @@
 
 buildPythonPackage rec {
   pname = "bitarray";
-  version = "2.8.0";
+  version = "2.8.1";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-zWmpJqM2PiXpSmRAgwMoPFkIW+ltcVJL2+a/yNouNOA=";
+    hash = "sha256-5ozu81qIYl0WFpVQdo/MjTiUkT42PCTsv2uMB+sCyPM=";
   };
 
   checkPhase = ''