diff --git a/pkgs/development/python-modules/bitarray/default.nix b/pkgs/development/python-modules/bitarray/default.nix
index fae1cf96cc82..554b317c273d 100644
--- a/pkgs/development/python-modules/bitarray/default.nix
+++ b/pkgs/development/python-modules/bitarray/default.nix
@@ -9,14 +9,14 @@
 
 buildPythonPackage rec {
   pname = "bitarray";
-  version = "3.3.0";
+  version = "3.4.1";
   pyproject = true;
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-BEkJzmO3et9XOd5A4vYhRzRT6dS9uRPvLRTBhaRTLOc=";
+    hash = "sha256-5fqIcyu8+1Q37lVOGPhCqPbIa+c2VrBYDuFG/Tcxdsk=";
   };
 
   build-system = [ setuptools ];