diff --git a/pkgs/development/python-modules/convertdate/default.nix b/pkgs/development/python-modules/convertdate/default.nix
index 5a8608c5037..c60d4778012 100644
--- a/pkgs/development/python-modules/convertdate/default.nix
+++ b/pkgs/development/python-modules/convertdate/default.nix
@@ -2,14 +2,14 @@
 
 buildPythonPackage rec {
   pname = "convertdate";
-  version = "2.2.0";
+  version = "2.2.1";
 
   # Tests are not available in the PyPI tarball so use GitHub instead.
   src = fetchFromGitHub {
     owner = "fitnr";
     repo = pname;
     rev = "v${version}";
-    sha256 = "04j8k7a9qndmawy3m345py74y18hw7lb6gc0qp0mr8d68x99xjq0";
+    sha256 = "1xgi7x9b9kxm0q51bqnmwdm5lp8vwhx5yk4d1b23r37spz9dbhw5";
   };
 
   propagatedBuildInputs = [ pymeeus pytz ];