diff --git a/pkgs/development/python-modules/ezyrb/default.nix b/pkgs/development/python-modules/ezyrb/default.nix
index 7730c1fe8e85..e3f6419871f9 100644
--- a/pkgs/development/python-modules/ezyrb/default.nix
+++ b/pkgs/development/python-modules/ezyrb/default.nix
@@ -14,7 +14,7 @@
 
 buildPythonPackage rec {
   pname = "ezyrb";
-  version = "1.3.0";
+  version = "1.3.0.post2209";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
@@ -22,8 +22,8 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "mathLab";
     repo = "EZyRB";
-    rev = "v${version}";
-    sha256 = "sha256-tFkz+j97m+Bgk/87snQMXtgZnykiWYyWJJLaqwRKiaY=";
+    rev = "refs/tags/v${version}";
+    sha256 = "sha256-jybDVPUybIuTeWRAA0cphb2pDVobuMX1OufBavZ/ZbQ=";
   };
 
   propagatedBuildInputs = [