diff --git a/pkgs/development/python-modules/convertdate/default.nix b/pkgs/development/python-modules/convertdate/default.nix
index f285a74e544..0dee95541b0 100644
--- a/pkgs/development/python-modules/convertdate/default.nix
+++ b/pkgs/development/python-modules/convertdate/default.nix
@@ -1,5 +1,6 @@
 { lib
 , buildPythonPackage
+, isPy27
 , fetchFromGitHub
 , pymeeus
 , pytz
@@ -10,6 +11,8 @@ buildPythonPackage rec {
   pname = "convertdate";
   version = "2.3.0";
 
+  disabled = isPy27;
+
   # Tests are not available in the PyPI tarball so use GitHub instead.
   src = fetchFromGitHub {
     owner = "fitnr";