spec gef requirement

features/org.eclipse.wst.xml_ui.feature/feature.xml

diff --git a/features/org.eclipse.wst.xml_ui.feature/feature.xml b/features/org.eclipse.wst.xml_ui.feature/feature.xml
index 4d4b2b2..67a4e39 100644
--- a/features/org.eclipse.wst.xml_ui.feature/feature.xml
+++ b/features/org.eclipse.wst.xml_ui.feature/feature.xml
@@ -29,6 +29,11 @@
          id="org.eclipse.wst.xml_core.feature"
          version="0.0.0"/>
 
+   <requires>
+      <import feature="org.eclipse.gef" version="3.3.0" match="compatible"/>
+   </requires>
+
+
    <plugin
          id="org.eclipse.wst.dtd.ui"
          download-size="0"