diff --git a/knockout.postbox/knockout-postbox.d.ts b/knockout.postbox/knockout-postbox.d.ts
index daa35458a..65f0bbf13 100644
--- a/knockout.postbox/knockout-postbox.d.ts
+++ b/knockout.postbox/knockout-postbox.d.ts
@@ -20,11 +20,11 @@ interface KnockoutObservable<T> {
 }
 
 interface KnockoutObservableArray<T> {
-	subscribeTo(topic: string, useLastPublishedValueToInitialize?: boolean, transform?: (val: any) => T): KnockoutObservableArray<T>;
+	subscribeTo(topic: string, useLastPublishedValueToInitialize?: boolean, transform?: (val: any) => any /* T */): KnockoutObservableArray<T>;
 	unsubscribeFrom(topic: string): KnockoutObservableArray<T>;
-	publishOn(topic: string, skipInitialPublish?: boolean, equalityComparer?: (newValue: T, oldValue: T) => boolean): KnockoutObservableArray<T>;
+	publishOn(topic: string, skipInitialPublish?: boolean, equalityComparer?: (newValue: any /* T */, oldValue: any /* T */) => boolean): KnockoutObservableArray<T>;
 	stopPublishingOn(topic: string): KnockoutObservableArray<T>;
-	syncWith(topic: string, initializeWithLatestValue?: boolean, skipInitialPublish?: boolean, equalityComparer?: (newValue: T, oldValue: T) => boolean): KnockoutObservableArray<T>;
+	syncWith(topic: string, initializeWithLatestValue?: boolean, skipInitialPublish?: boolean, equalityComparer?: (newValue: any /* T */, oldValue: any /* T */) => boolean): KnockoutObservableArray<T>;
 }
 
 interface KnockoutStatic {