diff --git a/pkgs/development/python-modules/cython/default.nix b/pkgs/development/python-modules/cython/default.nix
index 68e3b299c0b4..2ce92a1786b7 100644
--- a/pkgs/development/python-modules/cython/default.nix
+++ b/pkgs/development/python-modules/cython/default.nix
@@ -15,14 +15,14 @@
 
 buildPythonPackage rec {
   pname = "cython";
-  version = "3.0.11";
+  version = "3.0.11-1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "cython";
     repo = "cython";
-    rev = version;
-    hash = "sha256-ZyDNv95eS9YrVHIh5C/Xq8OvfX1cnI3f9GjA+OfaONA=";
+    rev = "refs/tags/${version}";
+    hash = "sha256-P2k21uNC6X+R6a1dWAIspGnUc6JwAzRXUleVfZG+vqY=";
   };
 
   build-system = [