diff --git a/pkgs/by-name/gt/gtg/package.nix b/pkgs/by-name/gt/gtg/package.nix
index 4bcbe2a441e0..8abd74e7e25f 100644
--- a/pkgs/by-name/gt/gtg/package.nix
+++ b/pkgs/by-name/gt/gtg/package.nix
@@ -62,6 +62,7 @@ python3Packages.buildPythonApplication rec {
     gst-python
     liblarch
     caldav
+    vobject
   ];
 
   nativeCheckInputs = with python3Packages; [