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 d386b1cb05da..9797c226b141 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
@@ -2,6 +2,7 @@
 , buildPythonPackage
 , fetchFromGitHub
 , pythonOlder
+, babel
 , gitpython
 , mkdocs
 , pytz
@@ -24,6 +25,7 @@ buildPythonPackage rec {
   };
 
   propagatedBuildInputs = [
+    babel
     gitpython
     mkdocs
     pytz