diff --git a/CHANGELOG.md b/CHANGELOG.md
index f8830194ac..de4226c21a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -50,6 +50,8 @@ Please mark all change in change log and use the ticket from JIRA.
 - \#649 - Typo "partiton" should be "partition"
 - \#654 - Random crash when frequently insert vector one by one
 - \#658 - Milvus error out when building SQ8H index without GPU resources
+- \#668 - Update badge of README
+- \#670 - Random failure of unittest db_test::SEARCH_TEST
 
 ## Feature
 - \#12 - Pure CPU version for Milvus
diff --git a/README.md b/README.md
index 47f8bb6c4e..f975f0437e 100644
--- a/README.md
+++ b/README.md
@@ -5,8 +5,8 @@
 ![LICENSE](https://img.shields.io/badge/license-Apache--2.0-brightgreen)
 ![Language](https://img.shields.io/badge/language-C%2B%2B-blue)
 [![codebeat badge](https://codebeat.co/badges/e030a4f6-b126-4475-a938-4723d54ec3a7?style=plastic)](https://codebeat.co/projects/github-com-jinhai-cn-milvus-master)
-![Release](https://img.shields.io/badge/release-v0.5.3-yellowgreen)
-![Release_date](https://img.shields.io/badge/release%20date-November-yellowgreen)
+![Release](https://img.shields.io/badge/release-v0.6.0-yellowgreen)
+![Release_date](https://img.shields.io/badge/release%20date-December-yellowgreen)
 [![codecov](https://codecov.io/gh/milvus-io/milvus/branch/master/graph/badge.svg)](https://codecov.io/gh/milvus-io/milvus)
 
 [中文版](README_CN.md) | [日本語版](README_JP.md)
diff --git a/README_CN.md b/README_CN.md
index 4eb360f5fd..92c81f6126 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -4,8 +4,8 @@
 ![LICENSE](https://img.shields.io/badge/license-Apache--2.0-brightgreen)
 ![Language](https://img.shields.io/badge/language-C%2B%2B-blue)
 [![codebeat badge](https://codebeat.co/badges/e030a4f6-b126-4475-a938-4723d54ec3a7?style=plastic)](https://codebeat.co/projects/github-com-jinhai-cn-milvus-master)
-![Release](https://img.shields.io/badge/release-v0.5.3-yellowgreen)
-![Release_date](https://img.shields.io/badge/release_date-October-yellowgreen)
+![Release](https://img.shields.io/badge/release-v0.6.0-yellowgreen)
+![Release_date](https://img.shields.io/badge/release_date-December-yellowgreen)
 [![codecov](https://codecov.io/gh/milvus-io/milvus/branch/master/graph/badge.svg)](https://codecov.io/gh/milvus-io/milvus)
 
 
diff --git a/README_JP.md b/README_JP.md
index 6b11da7a62..7502fa28c3 100644
--- a/README_JP.md
+++ b/README_JP.md
@@ -5,8 +5,9 @@
 ![LICENSE](https://img.shields.io/badge/license-Apache--2.0-brightgreen)
 ![Language](https://img.shields.io/badge/language-C%2B%2B-blue)
 [![codebeat badge](https://codebeat.co/badges/e030a4f6-b126-4475-a938-4723d54ec3a7?style=plastic)](https://codebeat.co/projects/github-com-jinhai-cn-milvus-master)
-![Release](https://img.shields.io/badge/release-v0.5.3-yellowgreen)
-![Release_date](https://img.shields.io/badge/release%20date-November-yellowgreen)
+![Release](https://img.shields.io/badge/release-v0.6.0-yellowgreen)
+![Release_date](https://img.shields.io/badge/release%20date-December-yellowgreen)
+[![codecov](https://codecov.io/gh/milvus-io/milvus/branch/master/graph/badge.svg)](https://codecov.io/gh/milvus-io/milvus)
 
 
 # Milvus へようこそ
diff --git a/core/unittest/db/test_db.cpp b/core/unittest/db/test_db.cpp
index 768687a8a3..dbed92b355 100644
--- a/core/unittest/db/test_db.cpp
+++ b/core/unittest/db/test_db.cpp
@@ -338,7 +338,13 @@ TEST_F(DBTest, SEARCH_TEST) {
 
     {  // search by specify index file
         milvus::engine::meta::DatesT dates;
-        std::vector<std::string> file_ids = {"1", "2", "3", "4", "5", "6"};
+        std::vector<std::string> file_ids;
+        // sometimes this case run fast to merge file and build index, old file will be deleted immediately,
+        // so the QueryByFileID cannot get files to search
+        // input 100 files ids to avoid random failure of this case
+        for (int i = 0; i < 100; i++) {
+            file_ids.push_back(std::to_string(i));
+        }
         milvus::engine::ResultIds result_ids;
         milvus::engine::ResultDistances result_distances;
         stat = db_->QueryByFileID(TABLE_NAME, file_ids, k, nq, 10, xq.data(), dates, result_ids, result_distances);
diff --git a/tests/milvus_python_test/test_index.py b/tests/milvus_python_test/test_index.py
index 917bef962c..a86f65dfdd 100644
--- a/tests/milvus_python_test/test_index.py
+++ b/tests/milvus_python_test/test_index.py
@@ -587,6 +587,8 @@ class TestIndexIP:
         '''
         index_params = get_simple_index_params
         logging.getLogger().info(index_params)
+        if index_params["index_type"] == IndexType.IVF_PQ:
+            pytest.skip("Skip some PQ cases")
         status, ids = connect.add_vectors(ip_table, vectors)
         status = connect.create_index(ip_table, index_params)
         assert status.OK()
@@ -812,11 +814,13 @@ class TestIndexIP:
         status, result = connect.describe_index(ip_table)
         logging.getLogger().info(result)
         assert result._table_name == ip_table
-        if index_params["index_type"] == IndexType.IVF_PQ:
+        status, mode = connect._cmd("mode")
+        if str(mode) == "GPU" and index_params["index_type"] == IndexType.IVF_PQ:
             assert result._index_type == IndexType.FLAT
             assert result._nlist == 16384
         else:
             assert result._index_type == index_params["index_type"]
+            assert result._nlist == index_params["nlist"]
 
     def test_describe_index_partition(self, connect, ip_table, get_simple_index_params):
         '''