diff --git a/pkgs/colcon/notification.nix b/pkgs/colcon/notification.nix
index c22ec9f265..41651f2918 100644
--- a/pkgs/colcon/notification.nix
+++ b/pkgs/colcon/notification.nix
@@ -13,6 +13,8 @@ buildPythonPackage rec {
 
   doCheck = false;
 
+  disabled = isPy27;
+
   meta = with lib; {
     description = "An extension for colcon-core to provide status notifications.";
     homepage = "https://colcon.readthedocs.io";