diff --git a/knockout.mapping.js b/knockout.mapping.js
index 2ac4a3d..1482283 100644
--- a/knockout.mapping.js
+++ b/knockout.mapping.js
@@ -285,14 +285,14 @@
 						return DO(val);
 					},
 					deferEvaluation: true
-				});
+				}).extend({notify: 'always'});
 				if (DEBUG) wrapped._wrapper = true;
 				wrapped.__DO = DO;
 				return wrapped;
 			};
 			
 			options.deferEvaluation = true; // will either set for just options, or both read/options.
-			var realDependentObservable = new realKoDependentObservable(read, owner, options);
+			var realDependentObservable = new realKoDependentObservable(read, owner, options).extend({notify: 'always'});
 
 			if (!realDeferEvaluation) {
 				realDependentObservable = wrap(realDependentObservable);
diff --git a/spec/runner.html b/spec/runner.html
index d4b0b9b..de6299b 100644
--- a/spec/runner.html
+++ b/spec/runner.html
@@ -6,7 +6,7 @@
 	<link rel="stylesheet" href="lib/qunit-1.10.0.css" type="text/css" media="screen">
 	<script type="text/javascript" src="lib/qunit-1.10.0.js"></script>
 	<script type="text/javascript" src="lib/json2.js"></script>
-	<script type="text/javascript" src="http://knockoutjs.com/downloads/knockout-2.2.0.js"></script>
+	<script type="text/javascript" src="http://knockoutjs.com/downloads/knockout-3.0.0.js"></script>
 	<script type="text/javascript" src="../knockout.mapping.js"></script>
 	<script type="text/javascript">
 		var curModuleName;