diff --git a/tests/python_client/requirements.txt b/tests/python_client/requirements.txt
index f94a599e04..a5619607e7 100644
--- a/tests/python_client/requirements.txt
+++ b/tests/python_client/requirements.txt
@@ -12,7 +12,7 @@ allure-pytest==2.7.0
 pytest-print==0.2.1
 pytest-level==0.1.1
 pytest-xdist==2.5.0
-pymilvus==2.5.0rc17
+pymilvus==2.5.0rc18
 pytest-rerunfailures==9.1.1
 git+https://github.com/Projectplace/pytest-tags
 ndg-httpsclient
diff --git a/tests/python_client/testcases/test_search.py b/tests/python_client/testcases/test_search.py
index 85da1d590c..ad45962227 100644
--- a/tests/python_client/testcases/test_search.py
+++ b/tests/python_client/testcases/test_search.py
@@ -7743,7 +7743,7 @@ class TestCollectionRangeSearch(TestcaseBase):
         expected: the return distance equals to the computed value
         """
         # 1. initialize with binary data
-        dim = 44
+        dim = 48
         auto_id = False
         collection_w, _, binary_raw_vector, insert_ids, time_stamp = self.init_collection_general(prefix, True, 2,
                                                                                                   is_binary=True,
@@ -7827,7 +7827,7 @@ class TestCollectionRangeSearch(TestcaseBase):
         expected: the return distance equals to the computed value
         """
         # 1. initialize with binary data
-        dim = 77
+        dim = 80
         auto_id = True
         collection_w, _, binary_raw_vector, insert_ids = self.init_collection_general(prefix, True, 2,
                                                                                       is_binary=True,