diff --git a/pkgs/development/python-modules/bitmath/default.nix b/pkgs/development/python-modules/bitmath/default.nix
index bb2e6046886..092ad6c1003 100644
--- a/pkgs/development/python-modules/bitmath/default.nix
+++ b/pkgs/development/python-modules/bitmath/default.nix
@@ -2,11 +2,11 @@
 
 buildPythonPackage rec {
   pname = "bitmath";
-  version = "1.3.1.2";
+  version = "1.3.3.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1k8d1wmxqjc8cqzaixpxf45k6dl1kqhblr0g4wyjl0qa18q8wasd";
+    sha256 = "293325f01e65defe966853111df11d39215eb705a967cb115851da8c4cfa3eb8";
   };
 
   checkInputs = [ (if isPy3k then progressbar33 else progressbar231) mock ];