diff --git a/src/index.js b/src/index.js
index ae96b747..b13b2077 100644
--- a/src/index.js
+++ b/src/index.js
@@ -100,6 +100,7 @@ export {
   UpdateDecoderV1,
   UpdateDecoderV2,
   equalDeleteSets,
+  mergeDeleteSets,
   snapshotContainsUpdate
 } from './internals.js'