diff --git a/pkgs/development/python-modules/pyroaring/default.nix b/pkgs/development/python-modules/pyroaring/default.nix
index a0ee27e8a5d4..a059892de83c 100644
--- a/pkgs/development/python-modules/pyroaring/default.nix
+++ b/pkgs/development/python-modules/pyroaring/default.nix
@@ -26,7 +26,16 @@ buildPythonPackage rec {
   '';
 
   build-system = [
-    cython
+    (cython.overrideAttrs (rec {
+      name = "cython";
+      version = "3.0.12";
+      src = fetchFromGitHub {
+        owner = "cython";
+        repo = "cython";
+        tag = version;
+        hash = "sha256-clJXjQb6rVECirKRUGX0vD5a6LILzPwNo7+6KKYs2pI=";
+      };
+    }))
     setuptools
   ];