diff --git a/bootstrap b/bootstrap
index 59ad112..cc27d67 100644
--- a/bootstrap
+++ b/bootstrap
@@ -13,4 +13,4 @@ define_env "QT_AUTO_SCREEN_SCALE_FACTOR" "0"
 define_env "QT_QPA_PLATFORM" "wayland-egl"
 define_env "QT_WAYLAND_DISABLE_WINDOWDECORATION" "1"
 define_env "MOZ_ENABLE_WAYLAND" "1"
-define_env "QT_QPA_PLATFORMTHEME" "gtk2"
+define_env "QT_QPA_PLATFORMTHEME" "gtk3"