diff --git a/pkgs/applications/networking/instant-messengers/scudcloud/default.nix b/pkgs/applications/networking/instant-messengers/scudcloud/default.nix
index f112d5f6110..441bc020868 100644
--- a/pkgs/applications/networking/instant-messengers/scudcloud/default.nix
+++ b/pkgs/applications/networking/instant-messengers/scudcloud/default.nix
@@ -9,7 +9,7 @@ in python3Packages.buildPythonPackage {
     sha256 = "e0d1cb72115d0fda17db92d28be51558ad8fe250972683fac3086dbe8d350d22";
   };
 
-  propagatedBuildInputs = with python3Packages; [ pyqt5 dbus-python ];
+  propagatedBuildInputs = with python3Packages; [ pyqt5 dbus-python jsmin ];
 
   meta = with stdenv.lib; {
     description = "Non-official desktop client for Slack";