diff --git a/sigil/eclipse/ui/sigil.properties b/sigil/eclipse/ui/sigil.properties
index 689a18b..d165ed1 100644
--- a/sigil/eclipse/ui/sigil.properties
+++ b/sigil/eclipse/ui/sigil.properties
@@ -44,4 +44,7 @@
 	org.osgi.framework;version=1.4.0, \
 	org.osgi.service.prefs;version=1.1.0, \
 
+-requires: \
+	org.eclipse.swt.carbon.macosx;version=3.4.1, \
+
 # end