diff --git a/pkgs/development/python-modules/mkdocs-git-revision-date-localized-plugin/default.nix b/pkgs/development/python-modules/mkdocs-git-revision-date-localized-plugin/default.nix
index 1bc335fdbace..986f0d1d2ce6 100644
--- a/pkgs/development/python-modules/mkdocs-git-revision-date-localized-plugin/default.nix
+++ b/pkgs/development/python-modules/mkdocs-git-revision-date-localized-plugin/default.nix
@@ -11,7 +11,7 @@
 
 buildPythonPackage rec {
   pname = "mkdocs-git-revision-date-localized-plugin";
-  version = "1.2.0";
+  version = "1.2.1";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
@@ -19,8 +19,8 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "timvink";
     repo = "mkdocs-git-revision-date-localized-plugin";
-    rev = "v${version}" ;
-    hash = "sha256-l7NUmsdd1FHkbdqtRcMQBfplZJgLCXrN+QuYaQLpz0k=";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-UIbW64ac9kXptJjn86V6vPArnICANiT3QGi5JH45KLY=";
   };
 
   propagatedBuildInputs = [