diff --git a/src/lib.ts b/src/lib.ts
index e846a378..c0b05032 100644
--- a/src/lib.ts
+++ b/src/lib.ts
@@ -46,3 +46,9 @@ export {
     ConcatList,
     ObservableMap
 } from "./observable/index";
+export {
+    BaseObservableValue,
+    IWaitHandle,
+    ObservableValue,
+    RetainedObservableValue
+} from "./observable/ObservableValue";
diff --git a/src/observable/ObservableValue.ts b/src/observable/ObservableValue.ts
index ad0a226d..65406700 100644
--- a/src/observable/ObservableValue.ts
+++ b/src/observable/ObservableValue.ts
@@ -41,7 +41,7 @@ export abstract class BaseObservableValue<T> extends BaseObservable<(value: T) =
     }
 }
 
-interface IWaitHandle<T> {
+export interface IWaitHandle<T> {
     promise: Promise<T>;
     dispose(): void;
 }