diff --git a/plugins/org.etsi.mts.tdl.constraints.ui/META-INF/MANIFEST.MF b/plugins/org.etsi.mts.tdl.constraints.ui/META-INF/MANIFEST.MF
index 4151b16d847e7f7eb0582302555598c932a8849f..60165ba221d44c51139e45f105636a5a6068e938 100644
--- a/plugins/org.etsi.mts.tdl.constraints.ui/META-INF/MANIFEST.MF
+++ b/plugins/org.etsi.mts.tdl.constraints.ui/META-INF/MANIFEST.MF
@@ -21,6 +21,8 @@ Require-Bundle: org.eclipse.ui,
  org.eclipse.epsilon.etl.engine,
  org.eclipse.epsilon.profiling,
  org.eclipse.epsilon.eol.tools,
+ org.eclipse.ocl.xtext.completeocl.ui,
+ org.eclipse.ocl.xtext.essentialocl.ui,
  com.google.inject,
  org.eclipse.xtext.ui,
  org.etsi.mts.tdl.model