diff --git a/pkgs/development/python-modules/bitarray/default.nix b/pkgs/development/python-modules/bitarray/default.nix
index 28ae80020986..97dded095624 100644
--- a/pkgs/development/python-modules/bitarray/default.nix
+++ b/pkgs/development/python-modules/bitarray/default.nix
@@ -6,11 +6,11 @@
 
 buildPythonPackage rec {
   pname = "bitarray";
-  version = "2.2.1";
+  version = "2.3.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-MbQNcWofBkLqnidBwpt1YpkHXbLh0evnUOPiwUafWJ0=";
+    sha256 = "sha256-QgPNtE136zCnReZXbIK34zaB8TSzOBBSVvd+cdvTMN0=";
   };
 
   checkPhase = ''