diff --git a/virt-manager.rb b/virt-manager.rb
index 7ed74c4..2dcb4f8 100644
--- a/virt-manager.rb
+++ b/virt-manager.rb
@@ -82,7 +82,7 @@ class VirtManager < Formula
     # manual schema compile step
     system "#{Formula["glib"].opt_bin}/glib-compile-schemas", "#{HOMEBREW_PREFIX}/share/glib-2.0/schemas"
     # manual icon cache update step
-    system "#{Formula["gtk+"].opt_bin}/gtk-update-icon-cache", "#{HOMEBREW_PREFIX}/share/icons/hicolor"
+    system "#{Formula["gtk+3"].opt_bin}/gtk3-update-icon-cache", "#{HOMEBREW_PREFIX}/share/icons/hicolor"
   end
 end
 __END__
diff --git a/virt-viewer.rb b/virt-viewer.rb
index 244277e..cc692db 100644
--- a/virt-viewer.rb
+++ b/virt-viewer.rb
@@ -32,6 +32,6 @@ class VirtViewer < Formula
     # manual update of mime database
     system "#{Formula["shared-mime-info"].opt_bin}/update-mime-database", "#{HOMEBREW_PREFIX}/share/mime"
     # manual icon cache update step
-    system "#{Formula["gtk+"].opt_bin}/gtk-update-icon-cache", "#{HOMEBREW_PREFIX}/share/icons/hicolor"
+    system "#{Formula["gtk+3"].opt_bin}/gtk3-update-icon-cache", "#{HOMEBREW_PREFIX}/share/icons/hicolor"
   end
 end