--- a/configure.ac
+++ b/configure.ac
@@ -28,11 +28,11 @@ LT_PREREQ([2.2])
 LT_INIT
 
 # Package dependencies
-GLIB_REQUIRED=2.50.0
+GLIB_REQUIRED=2.48.0
 LIBGTOP_REQUIRED=2.23.1
 GIOMM_REQUIRED=2.26.0
 GLIBMM_REQUIRED=2.22
-GTK_REQUIRED=3.22.0
+GTK_REQUIRED=3.20.0
 GTKMM_REQUIRED=3.8.1
 LIBWNCK_REQUIRED=3.0.0
 LIBXML_REQUIRED=2.0