diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6bb659b06fe..34cae75c6ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 # Change log
 
 ### vNEXT
+- Fix the ability to specify IDs in Apollo configuration to tell queries about updates when new information becomes available [PR #2274](https://github.com/apollographql/apollo-client/pull/2274)
 - Fix response not being included with errors that have response body [PR #2239](https://github.com/apollographql/apollo-client/pull/2239)
 
 - Allow conditional refetchQueries [PR #2234](https://github.com/apollographql/apollo-client/pull/2234)
diff --git a/src/core/types.ts b/src/core/types.ts
index eb22c0f930e..2d7d3d1e2a5 100644
--- a/src/core/types.ts
+++ b/src/core/types.ts
@@ -33,4 +33,10 @@ export enum FetchType {
   poll = 3,
 }
 
-export type IdGetter = (value: Object) => string | null | undefined;
+export interface IdGetterObj extends Object {
+  __typename?: string;
+  id?: string;
+}
+export declare type IdGetter = (
+  value: IdGetterObj,
+) => string | null | undefined;