diff --git a/tests/requirements.txt b/tests/requirements.txt
index 85e808d18..5833985cc 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,4 +1,4 @@
-PyYAML==5.4.1
+PyYAML==6.0
 requests==2.26.0
 forcediphttpsadapter==1.0.2
 kubernetes==20.11.0a1
diff --git a/tests/suite/test_v_s_route_focused_canary.py b/tests/suite/test_v_s_route_focused_canary.py
index 55a777890..9f41a6c13 100644
--- a/tests/suite/test_v_s_route_focused_canary.py
+++ b/tests/suite/test_v_s_route_focused_canary.py
@@ -2,6 +2,7 @@
 import requests
 import yaml
 
+from yaml.loader import Loader
 from settings import TEST_DATA
 from suite.vs_vsr_resources_utils import create_virtual_server_from_yaml, create_v_s_route_from_yaml
 from suite.fixtures import VirtualServerRoute
@@ -19,7 +20,7 @@ def get_weights_of_splitting(file) -> []:
     """
     weights = []
     with open(file) as f:
-        docs = yaml.load_all(f)
+        docs = yaml.load_all(f, Loader=Loader)
         for dep in docs:
             for item in dep['spec']['subroutes'][0]['matches'][0]['splits']:
                 weights.append(item['weight'])
@@ -35,7 +36,7 @@ def get_upstreams_of_splitting(file) -> []:
     """
     upstreams = []
     with open(file) as f:
-        docs = yaml.load_all(f)
+        docs = yaml.load_all(f, Loader=Loader)
         for dep in docs:
             for item in dep['spec']['subroutes'][0]['matches'][0]['splits']:
                 upstreams.append(item['action']['pass'])
diff --git a/tests/suite/test_v_s_route_split_traffic.py b/tests/suite/test_v_s_route_split_traffic.py
index 9d15eba79..fa009c5da 100644
--- a/tests/suite/test_v_s_route_split_traffic.py
+++ b/tests/suite/test_v_s_route_split_traffic.py
@@ -1,3 +1,4 @@
+from yaml.loader import Loader
 import pytest
 import requests
 import yaml
@@ -16,7 +17,7 @@ def get_weights_of_splitting(file) -> []:
     """
     weights = []
     with open(file) as f:
-        docs = yaml.load_all(f)
+        docs = yaml.load_all(f, Loader=Loader)
         for dep in docs:
             for item in dep['spec']['subroutes'][0]['splits']:
                 weights.append(item['weight'])
@@ -32,7 +33,7 @@ def get_upstreams_of_splitting(file) -> []:
     """
     upstreams = []
     with open(file) as f:
-        docs = yaml.load_all(f)
+        docs = yaml.load_all(f, Loader=Loader)
         for dep in docs:
             for item in dep['spec']['subroutes'][0]['splits']:
                 upstreams.append(item['action']['pass'])