diff --git a/src/firestore/public_api.ts b/src/firestore/public_api.ts
index 933f565b0..e5cbd8250 100644
--- a/src/firestore/public_api.ts
+++ b/src/firestore/public_api.ts
@@ -4,3 +4,4 @@ export * from './collection/collection';
 export * from './document/document';
 export * from './collection/changes';
 export * from './observable/fromRef';
+export * from './interfaces'