diff --git a/pkgs/development/python-modules/bsdiff4/default.nix b/pkgs/development/python-modules/bsdiff4/default.nix
index 5ee2ff0522af..5f852a5e82ba 100644
--- a/pkgs/development/python-modules/bsdiff4/default.nix
+++ b/pkgs/development/python-modules/bsdiff4/default.nix
@@ -6,14 +6,14 @@
 
 buildPythonPackage rec {
   pname = "bsdiff4";
-  version = "1.2.2";
+  version = "1.2.3";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-GICsP1KmxGrmvMbbEX5Ps1+bDM1a91/U/uaQfQDWmDw=";
+    hash = "sha256-G5XOk7nzBoRvbJHJ0OPrZZCkyFrCu+crX2DZ24KtKhw=";
   };
 
   pythonImportsCheck = [