diff --git a/pkgs/applications/misc/gradience/default.nix b/pkgs/applications/misc/gradience/default.nix
index fcb7d10c0162..3ddbe86cd78b 100644
--- a/pkgs/applications/misc/gradience/default.nix
+++ b/pkgs/applications/misc/gradience/default.nix
@@ -67,6 +67,7 @@ python3Packages.buildPythonApplication rec {
     pygobject3
     svglib
     yapsy
+    packaging
   ];
 
   preFixup = ''