diff --git a/types/relay-runtime/index.d.ts b/types/relay-runtime/index.d.ts
index 27ae20706c..6589acfd6d 100644
--- a/types/relay-runtime/index.d.ts
+++ b/types/relay-runtime/index.d.ts
@@ -23,6 +23,7 @@ export type RelayMutationRequest = any;
 export type RelayQueryRequest = any;
 export type ConcreteFragmentDefinition = object;
 export type ConcreteOperationDefinition = object;
+export type ReaderFragment = object;
 
 /**
  * FIXME: RelayContainer used to be typed with ReactClass<any>, but