diff --git a/sigil/eclipse/utils/sigil.properties b/sigil/eclipse/utils/sigil.properties
index 7c2a302..cbb2712 100644
--- a/sigil/eclipse/utils/sigil.properties
+++ b/sigil/eclipse/utils/sigil.properties
@@ -12,6 +12,7 @@
 -imports: \
 	org.eclipse.core.resources;version=3.4.1, \
 	org.eclipse.core.runtime;version=3.4.0, \
+	org.eclipse.core.runtime.content;version=3.3.0, \
 	org.eclipse.ui;version=3.4.1, \
 
 # end