diff --git a/core/plugin/gtk/Gemfile b/core/plugin/gtk/Gemfile
index 215c683..c5f4819 100644
--- a/core/plugin/gtk/Gemfile
+++ b/core/plugin/gtk/Gemfile
@@ -1,3 +1,3 @@
 source 'https://rubygems.org'
 
-gem 'gtk2', '2.2.3'
+gem 'gtk2', '2.2.4'