diff --git a/pkgs/development/python-modules/bitarray/default.nix b/pkgs/development/python-modules/bitarray/default.nix
index e83a79192387..239089a911f1 100644
--- a/pkgs/development/python-modules/bitarray/default.nix
+++ b/pkgs/development/python-modules/bitarray/default.nix
@@ -2,11 +2,11 @@
 
 buildPythonPackage rec {
   pname = "bitarray";
-  version = "2.1.0";
+  version = "2.1.3";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-lyJKGTJezuSaO/TfPuBTHTr5zyiLZ9CJp+9Eo8TqODk=";
+    sha256 = "a24aff72a7f1b09571b5daf9dbfcffd98481be1fe085ae5ef662cf11452a97e0";
   };
 
   checkPhase = ''