diff --git a/pkgs/development/python-modules/pypck/default.nix b/pkgs/development/python-modules/pypck/default.nix
index cbadc2836823..1dea0e3ee957 100644
--- a/pkgs/development/python-modules/pypck/default.nix
+++ b/pkgs/development/python-modules/pypck/default.nix
@@ -12,7 +12,7 @@
 
 buildPythonPackage rec {
   pname = "pypck";
-  version = "0.7.20";
+  version = "0.7.21";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
@@ -21,7 +21,7 @@ buildPythonPackage rec {
     owner = "alengwenus";
     repo = "pypck";
     rev = "refs/tags/${version}";
-    hash = "sha256-n+MtZA7dgmNDPwgYzwuoMFV9AYNYWx8dUCFFWVOmWR8=";
+    hash = "sha256-6Ng+Jw5ZDtkKOftFVhy1uOjzcmeKI5VqWzPn3EkKfGI=";
   };
 
   postPatch = ''