diff --git a/repository/BaselineOfTiddlyWikiPharo/BaselineOfTiddlyWikiPharo.class.st b/repository/BaselineOfTiddlyWikiPharo/BaselineOfTiddlyWikiPharo.class.st
index b2cf3ee..4b94fb2 100644
--- a/repository/BaselineOfTiddlyWikiPharo/BaselineOfTiddlyWikiPharo.class.st
+++ b/repository/BaselineOfTiddlyWikiPharo/BaselineOfTiddlyWikiPharo.class.st
@@ -14,7 +14,7 @@ BaselineOfTiddlyWikiPharo >> baseline: spec [
 			spec baseline: 'ZTimestamp' with: [ spec repository: 'github://svenvc/ztimestamp/repository' ].
 			
 			"Packages" 
-			 spec package: 'TiddlyWiki'
+			 spec package: 'TiddlyWiki' with: [ spec requires: #('ZTimestamp') ]
 		]
 ]