diff --git a/src/datastore/index.js b/src/datastore/index.js
index 6a29e78a..19b9ddd8 100644
--- a/src/datastore/index.js
+++ b/src/datastore/index.js
@@ -165,6 +165,7 @@ export class DataStore extends TypedEmitter {
     const deferred = pDefer()
     this.#pendingIndex.set(versionId, deferred)
     await deferred.promise
+    this.#pendingIndex.delete(versionId)
 
     return /** @type {Extract<MapeoDoc, TDoc>} */ (
       decode(block, { coreDiscoveryKey, index })