diff --git a/core/src/db/engine/ExecutionEngineImpl.cpp b/core/src/db/engine/ExecutionEngineImpl.cpp
index 1ecba677fe3b64f37556fc6f8444e91ccfab8444..66e9795ff3c5e9bbebbda9f416c590b43d84c8b5 100644
--- a/core/src/db/engine/ExecutionEngineImpl.cpp
+++ b/core/src/db/engine/ExecutionEngineImpl.cpp
@@ -257,7 +257,6 @@ ExecutionEngineImpl::Load(bool to_cache) {
 Status
 ExecutionEngineImpl::CopyToGpu(uint64_t device_id, bool hybrid) {
     if (hybrid) {
-#if 1
         const std::string key = location_ + ".quantizer";
         std::vector<uint64_t> gpus = scheduler::get_gpu_pool();
 
@@ -306,7 +305,6 @@ ExecutionEngineImpl::CopyToGpu(uint64_t device_id, bool hybrid) {
             auto cached_quantizer = std::make_shared<CachedQuantizer>(pair.second);
             cache::GpuCacheMgr::GetInstance(device_id)->InsertItem(key, cached_quantizer);
         }
-#endif
         return Status::OK();
     }
 
diff --git a/core/src/index/cmake/ThirdPartyPackagesCore.cmake b/core/src/index/cmake/ThirdPartyPackagesCore.cmake
index 3635b4fa1b02ed0b7ffe5b157330e1f92931b5a0..e8a5c8a9957d7c9efd7702e2bb4c03aaed7f6593 100644
--- a/core/src/index/cmake/ThirdPartyPackagesCore.cmake
+++ b/core/src/index/cmake/ThirdPartyPackagesCore.cmake
@@ -245,11 +245,11 @@ if(CUSTOMIZATION)
         # set(FAISS_MD5 "072db398351cca6e88f52d743bbb9fa0") # commit-id 3a2344d04744166af41ef1a74449d68a315bfe17 branch-0.2.1
         # set(FAISS_MD5 "c89ea8e655f5cdf58f42486f13614714") # commit-id 9c28a1cbb88f41fa03b03d7204106201ad33276b branch-0.2.1
         # set(FAISS_MD5 "87fdd86351ffcaf3f80dc26ade63c44b") # commit-id 841a156e67e8e22cd8088e1b58c00afbf2efc30b branch-0.2.1
-        set(FAISS_MD5 "f3b2ce3364c3fa7febd3aa7fdd0fe380") # commit-id 694e03458e6b69ce8a62502f71f69a614af5af8f branch-0.3.0
+         set(FAISS_MD5 "f3b2ce3364c3fa7febd3aa7fdd0fe380") # commit-id 694e03458e6b69ce8a62502f71f69a614af5af8f branch-0.3.0
     endif()
 else()
-    set(FAISS_SOURCE_URL "https://github.com/facebookresearch/faiss/archive/v1.5.3.tar.gz")
-    set(FAISS_MD5 "0bc12737b23def156f6a1eb782050135")
+    set(FAISS_SOURCE_URL "https://github.com/milvus-io/faiss/archive/1.6.0.tar.gz")
+    set(FAISS_MD5 "eb96d84f98b078a9eec04a796f5c792e")
 endif()
 message(STATUS "FAISS URL = ${FAISS_SOURCE_URL}")
 
diff --git a/core/src/index/knowhere/knowhere/index/vector_index/IndexGPUIVF.cpp b/core/src/index/knowhere/knowhere/index/vector_index/IndexGPUIVF.cpp
index a26f94718161cd1b2041625272708a59d4c58b15..251dfc12edce608ffaba4a5aa3704522b8c85e63 100644
--- a/core/src/index/knowhere/knowhere/index/vector_index/IndexGPUIVF.cpp
+++ b/core/src/index/knowhere/knowhere/index/vector_index/IndexGPUIVF.cpp
@@ -86,7 +86,8 @@ GPUIVF::SerializeImpl() {
             faiss::Index* index = index_.get();
             faiss::Index* host_index = faiss::gpu::index_gpu_to_cpu(index);
 
-            SealImpl();
+            // TODO(linxj): support seal
+            // SealImpl();
 
             faiss::write_index(host_index, &writer);
             delete host_index;
diff --git a/core/src/index/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.cpp b/core/src/index/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.cpp
index 7b229db21eca23088229612d8a35a1197218afde..84bf5944211b8b58c260651c0d81cf5c7e1a1c24 100644
--- a/core/src/index/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.cpp
+++ b/core/src/index/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.cpp
@@ -160,7 +160,7 @@ IVFSQHybrid::LoadQuantizer(const Config& conf) {
         index_composition->quantizer = nullptr;
         index_composition->mode = quantizer_conf->mode;  // only 1
 
-        auto gpu_index = faiss::gpu::index_cpu_to_gpu(res->faiss_res.get(), gpu_id_, index_composition, &option);
+        auto gpu_index = faiss::gpu::index_cpu_to_gpu(res->faiss_res.get(), gpu_id, index_composition, &option);
         delete gpu_index;
 
         auto q = std::make_shared<FaissIVFQuantizer>();
@@ -354,5 +354,10 @@ IVFSQHybrid::LoadImpl(const BinarySet& index_binary) {
     GPUIVF::LoadImpl(index_binary);
 }
 
+void
+IVFSQHybrid::set_index_model(IndexModelPtr model) {
+    GPUIVF::set_index_model(model);
+}
+
 #endif
 }  // namespace knowhere
diff --git a/core/src/scheduler/job/Job.cpp b/core/src/scheduler/job/Job.cpp
index 1199fe17a6bf49c559176956b1727853d70d0b56..06a163b959230d6887084fafd55c946c34414e48 100644
--- a/core/src/scheduler/job/Job.cpp
+++ b/core/src/scheduler/job/Job.cpp
@@ -15,7 +15,7 @@
 // specific language governing permissions and limitations
 // under the License.
 
-#include "Job.h"
+#include "scheduler/job/Job.h"
 
 namespace milvus {
 namespace scheduler {
diff --git a/core/unittest/db/test_engine.cpp b/core/unittest/db/test_engine.cpp
index 147de5399c57f4d31734c70db85f595571f1539f..eb2c60ec4b02be1d3a4360c092f484a08424b4b5 100644
--- a/core/unittest/db/test_engine.cpp
+++ b/core/unittest/db/test_engine.cpp
@@ -108,7 +108,6 @@ TEST_F(EngineTest, ENGINE_IMPL_TEST) {
     ASSERT_EQ(engine_ptr->Dimension(), dimension);
     ASSERT_EQ(engine_ptr->Count(), ids.size());
 
-    status = engine_ptr->CopyToGpu(0, true);
     status = engine_ptr->CopyToGpu(0, false);
     //ASSERT_TRUE(status.ok());
 
diff --git a/core/unittest/db/utils.cpp b/core/unittest/db/utils.cpp
index 8903ce14ea264ae253a0e45b81f065651732a85d..16e195079cae03ee15a9f63b2a44e845ecc1553e 100644
--- a/core/unittest/db/utils.cpp
+++ b/core/unittest/db/utils.cpp
@@ -65,10 +65,10 @@ static const char
                    "  cache_insert_data: false          # whether load inserted data into cache\n"
                    "\n"
                    "engine_config:\n"
-                   "  blas_threshold: 20\n"
+                   "  use_blas_threshold: 20\n"
                    "\n"
                    "resource_config:\n"
-                   "  resource_pool:\n"
+                   "  search_resources:\n"
                    "    - gpu0\n"
                    "  index_build_device: gpu0          # GPU used for building index";