diff --git a/repository/TiddlyWiki/String.extension.st b/repository/TiddlyWiki/String.extension.st
index 502fde6..792f677 100644
--- a/repository/TiddlyWiki/String.extension.st
+++ b/repository/TiddlyWiki/String.extension.st
@@ -18,5 +18,5 @@ String >> asDateAndTimeForTiddler [
 	13 to: 14 do: [ :i | date add: (self at: i) ].
 	date add: '.'.
 	15 to: 17 do: [ :i | date add: (self at: i) ].
-	^ (date joinUsing: '') asDateAndTime
+	^ ((date joinUsing: ''), '+00:00') asDateAndTime
 ]
diff --git a/repository/TiddlyWiki/Tiddler.class.st b/repository/TiddlyWiki/Tiddler.class.st
index 58ad08f..33998e2 100644
--- a/repository/TiddlyWiki/Tiddler.class.st
+++ b/repository/TiddlyWiki/Tiddler.class.st
@@ -55,6 +55,7 @@ Tiddler >> asDictionary [
 		at: 'modified' put: self modified;
 		at: 'bag' put: self bag;
 		at: 'revision' put: self revision;
+		at: 'caption' put: self caption;
 		yourself.
 	self customFields ifNotEmpty: [
 		self customFields keysAndValuesDo: [:k :v |