diff --git a/pkgs/development/python-modules/pysnmp-pyasn1/default.nix b/pkgs/development/python-modules/pysnmp-pyasn1/default.nix
index 639b14307753..d962615e7adb 100644
--- a/pkgs/development/python-modules/pysnmp-pyasn1/default.nix
+++ b/pkgs/development/python-modules/pysnmp-pyasn1/default.nix
@@ -16,7 +16,7 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "pysnmp";
     repo = "pyasn1";
-    rev = "v${version}";
+    rev = "refs/tags/v${version}";
     hash = "sha256-W74aWMqGlat+aZfhbP1cTKRz7SomHdGwfK5yJwxgyqI=";
   };
 
@@ -35,6 +35,7 @@ buildPythonPackage rec {
   meta = with lib; {
     description = "Python ASN.1 encoder and decoder";
     homepage = "https://github.com/pysnmp/pyasn1";
+    changelog = "https://github.com/pysnmp/pyasn1/releases/tag/v${version}";
     license = licenses.bsd2;
     maintainers = with maintainers; [ fab ];
   };