diff --git a/pkgs/development/python-modules/pygmars/default.nix b/pkgs/development/python-modules/pygmars/default.nix
index e0764ecb3a4b..1d2109a321f5 100644
--- a/pkgs/development/python-modules/pygmars/default.nix
+++ b/pkgs/development/python-modules/pygmars/default.nix
@@ -9,13 +9,14 @@
 buildPythonPackage rec {
   pname = "pygmars";
   version = "0.7.0";
+  format = "setuptools";
 
   disabled = pythonOlder "3.6";
 
   src = fetchFromGitHub {
     owner = "nexB";
     repo = pname;
-    rev = "v${version}";
+    rev = "refs/tags/v${version}";
     sha256 = "0wghk4nzplpl26iwrgvm0n9x88nyxlcxz4ywss4nwdr4hfccl28l";
   };
 
@@ -36,6 +37,7 @@ buildPythonPackage rec {
   meta = with lib; {
     description = "Python lexing and parsing library";
     homepage = "https://github.com/nexB/pygmars";
+    changelog = "https://github.com/nexB/pygmars/releases/tag/v${version}";
     license = with licenses; [ asl20 ];
     maintainers = with maintainers; [ fab ];
   };