diff --git a/sigil/eclipse/utils/sigil.properties b/sigil/eclipse/utils/sigil.properties
index 2d01503..eb67c6c 100644
--- a/sigil/eclipse/utils/sigil.properties
+++ b/sigil/eclipse/utils/sigil.properties
@@ -23,5 +23,6 @@
 -requires: \
 	org.eclipse.core.runtime;version=3.4.0, \
 	org.eclipse.ui.ide;version=3.4.2, \
+	org.eclipse.ui.workbench;version=3.4.1, \
 
 # end