diff --git a/prompttools/playground/packages.txt b/prompttools/playground/packages.txt
index 8b8c16c2..1f32d479 100644
--- a/prompttools/playground/packages.txt
+++ b/prompttools/playground/packages.txt
@@ -1 +1,2 @@
-xclip
\ No newline at end of file
+xclip
+libgtk-3-dev
\ No newline at end of file