diff --git a/pkgs/development/python-modules/simber/default.nix b/pkgs/development/python-modules/simber/default.nix
index 68e9638c350a..c61523d2f392 100644
--- a/pkgs/development/python-modules/simber/default.nix
+++ b/pkgs/development/python-modules/simber/default.nix
@@ -8,7 +8,7 @@
 
 buildPythonPackage rec {
   pname = "simber";
-  version = "0.2.4";
+  version = "0.2.5";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
@@ -16,8 +16,8 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "deepjyoti30";
     repo = pname;
-    rev = version;
-    hash = "sha256-P4bhxu9Di4E2Zkd0vIkyDi1S6Y0V/EQSMF4ftWoiXKE=";
+    rev = "refs/tags/${version}";
+    hash = "sha256-d9YhqYmRyoYb03GqYKM7HkK8cnTQKPbSP6z2aanB6pQ=";
   };
 
   propagatedBuildInputs = [