diff --git a/sigil/eclipse/search/sigil.properties b/sigil/eclipse/search/sigil.properties
index 9701670..013b70f 100644
--- a/sigil/eclipse/search/sigil.properties
+++ b/sigil/eclipse/search/sigil.properties
@@ -23,4 +23,7 @@
 	org.eclipse.ui.plugin;version=3.4.1, \
 	org.osgi.framework;version=1.4.0, \
 
+-requires: \
+	org.eclipse.core.runtime;version=3.4.0, \
+
 # end