diff --git a/.changeset/gentle-coins-lie.md b/.changeset/gentle-coins-lie.md
new file mode 100644
index 000000000..b8942822c
--- /dev/null
+++ b/.changeset/gentle-coins-lie.md
@@ -0,0 +1,7 @@
+---
+'@powersync/service-module-mongodb-storage': patch
+'@powersync/service-core': patch
+'@powersync/service-image': patch
+---
+
+Fix slow clearing of bucket_parameters collection.
diff --git a/modules/module-mongodb-storage/src/storage/implementation/MongoSyncBucketStorage.ts b/modules/module-mongodb-storage/src/storage/implementation/MongoSyncBucketStorage.ts
index c2679fc68..8c6945b99 100644
--- a/modules/module-mongodb-storage/src/storage/implementation/MongoSyncBucketStorage.ts
+++ b/modules/module-mongodb-storage/src/storage/implementation/MongoSyncBucketStorage.ts
@@ -571,7 +571,7 @@ export class MongoSyncBucketStorage
     );
     await this.db.bucket_parameters.deleteMany(
       {
-        key: idPrefixFilter<SourceKey>({ g: this.group_id }, ['t', 'k'])
+        'key.g': this.group_id
       },
       { maxTimeMS: lib_mongo.db.MONGO_CLEAR_OPERATION_TIMEOUT_MS }
     );