diff -r df3513758d20 -r 7f39fe919c07 javaquery/api/src/main/resources/org/apidesign/bck2brwsr/htmlpage/knockout-2.2.1.js
--- a/javaquery/api/src/main/resources/org/apidesign/bck2brwsr/htmlpage/knockout-2.2.1.js	Sun Jan 20 20:48:37 2013 +0100
+++ b/javaquery/api/src/main/resources/org/apidesign/bck2brwsr/htmlpage/knockout-2.2.1.js	Sun Jan 20 21:00:46 2013 +0100
@@ -1304,6 +1304,10 @@
     dependentObservable.hasWriteFunction = typeof options["write"] === "function";
     dependentObservable.dispose = function () { dispose(); };
     dependentObservable.isActive = isActive;
+    dependentObservable.valueHasMutated = function() {
+        _hasBeenEvaluated = false;
+        evaluateImmediate();
+    };
 
     ko.subscribable.call(dependentObservable);
     ko.utils.extend(dependentObservable, ko.dependentObservable['fn']);