diff --git a/cpp/src/server/MegasearchTask.cpp b/cpp/src/server/MegasearchTask.cpp
index a1df83bcb3..6871893348 100644
--- a/cpp/src/server/MegasearchTask.cpp
+++ b/cpp/src/server/MegasearchTask.cpp
@@ -237,7 +237,6 @@ AddVectorTask::AddVectorTask(const std::string& table_name,
       record_array_(record_array),
       record_ids_(record_ids) {
     record_ids_.clear();
-    record_ids_.resize(record_array.size());
 }
 
 BaseTaskPtr AddVectorTask::Create(const std::string& table_name,
diff --git a/cpp/thirdparty/versions.txt b/cpp/thirdparty/versions.txt
index 772c709016..98e5381a56 100644
--- a/cpp/thirdparty/versions.txt
+++ b/cpp/thirdparty/versions.txt
@@ -26,7 +26,7 @@
 BOOST_VERSION=1.70.0
 BZIP2_VERSION=1.0.6
 EASYLOGGINGPP_VERSION=v9.96.7
-FAISS_VERSION=master
+FAISS_VERSION=v1.5.2
 GTEST_VERSION=1.8.1
 LAPACK_VERSION=v3.8.0
 LZ4_VERSION=v1.9.1