diff --git a/notebook/oai_client_cost.ipynb b/notebook/oai_client_cost.ipynb
index 857ee327a55..e4b35679313 100644
--- a/notebook/oai_client_cost.ipynb
+++ b/notebook/oai_client_cost.ipynb
@@ -300,7 +300,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.18"
+   "version": "3.11.6"
   }
  },
  "nbformat": 4,
diff --git a/test/agentchat/contrib/test_agent_builder.py b/test/agentchat/contrib/test_agent_builder.py
index 7380d6e62b9..de999f8b231 100644
--- a/test/agentchat/contrib/test_agent_builder.py
+++ b/test/agentchat/contrib/test_agent_builder.py
@@ -5,7 +5,9 @@
 from packaging.requirements import Requirement
 from autogen.agentchat.contrib.agent_builder import AgentBuilder
 from autogen import UserProxyAgent
-from conftest import skip_openai
+
+sys.path.append(os.path.join(os.path.dirname(__file__), "../.."))
+from conftest import skip_openai  # noqa: E402
 
 sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
 from test_assistant_agent import KEY_LOC, OAI_CONFIG_LIST  # noqa: E402
diff --git a/test/agentchat/contrib/test_compressible_agent.py b/test/agentchat/contrib/test_compressible_agent.py
index 298fd01e9da..9c5145a8dba 100644
--- a/test/agentchat/contrib/test_compressible_agent.py
+++ b/test/agentchat/contrib/test_compressible_agent.py
@@ -2,9 +2,11 @@
 import sys
 import autogen
 import os
-from conftest import skip_openai
 from autogen.agentchat.contrib.compressible_agent import CompressibleAgent
 
+sys.path.append(os.path.join(os.path.dirname(__file__), "../.."))
+from conftest import skip_openai  # noqa: E402
+
 here = os.path.abspath(os.path.dirname(__file__))
 
 sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
@@ -12,7 +14,6 @@
 
 try:
     import openai
-
 except ImportError:
     skip = True
 else:
diff --git a/test/agentchat/contrib/test_gpt_assistant.py b/test/agentchat/contrib/test_gpt_assistant.py
index 0a7e92e8ccc..b4674b7c015 100644
--- a/test/agentchat/contrib/test_gpt_assistant.py
+++ b/test/agentchat/contrib/test_gpt_assistant.py
@@ -3,7 +3,9 @@
 import sys
 import autogen
 from autogen import OpenAIWrapper
-from conftest import skip_openai
+
+sys.path.append(os.path.join(os.path.dirname(__file__), "../.."))
+from conftest import skip_openai  # noqa: E402
 
 sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
 from test_assistant_agent import KEY_LOC, OAI_CONFIG_LIST  # noqa: E402
diff --git a/test/agentchat/contrib/test_teachable_agent.py b/test/agentchat/contrib/test_teachable_agent.py
index b8156296b66..0d8285f1de5 100644
--- a/test/agentchat/contrib/test_teachable_agent.py
+++ b/test/agentchat/contrib/test_teachable_agent.py
@@ -2,7 +2,9 @@
 import os
 import sys
 from autogen import ConversableAgent, config_list_from_json
-from conftest import skip_openai
+
+sys.path.append(os.path.join(os.path.dirname(__file__), "../.."))
+from conftest import skip_openai  # noqa: E402
 
 sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
 from test_assistant_agent import OAI_CONFIG_LIST, KEY_LOC  # noqa: E402
diff --git a/test/agentchat/test_assistant_agent.py b/test/agentchat/test_assistant_agent.py
index b05a1b77beb..0bd22785104 100644
--- a/test/agentchat/test_assistant_agent.py
+++ b/test/agentchat/test_assistant_agent.py
@@ -2,9 +2,11 @@
 import sys
 import pytest
 import autogen
-from conftest import skip_openai
 from autogen.agentchat import AssistantAgent, UserProxyAgent
 
+sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
+from conftest import skip_openai  # noqa: E402
+
 try:
     from openai import OpenAI
 except ImportError:
diff --git a/test/agentchat/test_async.py b/test/agentchat/test_async.py
index d31f50c0cfb..496b73f7b58 100644
--- a/test/agentchat/test_async.py
+++ b/test/agentchat/test_async.py
@@ -1,8 +1,12 @@
 import pytest
 import asyncio
 import autogen
-from conftest import skip_openai
 from test_assistant_agent import KEY_LOC, OAI_CONFIG_LIST
+import sys
+import os
+
+sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
+from conftest import skip_openai  # noqa: E402
 
 try:
     from openai import OpenAI
diff --git a/test/agentchat/test_async_get_human_input.py b/test/agentchat/test_async_get_human_input.py
index f9de9f1c2f1..1285696c03e 100644
--- a/test/agentchat/test_async_get_human_input.py
+++ b/test/agentchat/test_async_get_human_input.py
@@ -1,8 +1,12 @@
 import asyncio
 import autogen
 import pytest
-from conftest import skip_openai
 from test_assistant_agent import KEY_LOC, OAI_CONFIG_LIST
+import sys
+import os
+
+sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
+from conftest import skip_openai  # noqa: E402
 
 try:
     from openai import OpenAI
diff --git a/test/agentchat/test_function_call.py b/test/agentchat/test_function_call.py
index 54f1f6dff00..3f4bdc79ad6 100644
--- a/test/agentchat/test_function_call.py
+++ b/test/agentchat/test_function_call.py
@@ -2,10 +2,13 @@
 import asyncio
 import json
 import autogen
-from conftest import skip_openai
 from autogen.math_utils import eval_math_responses
 from test_assistant_agent import KEY_LOC, OAI_CONFIG_LIST
 import sys
+import os
+
+sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
+from conftest import skip_openai  # noqa: E402
 
 try:
     from openai import OpenAI
diff --git a/test/agentchat/test_function_call_groupchat.py b/test/agentchat/test_function_call_groupchat.py
index 7b5266195f7..cf4b199cd51 100644
--- a/test/agentchat/test_function_call_groupchat.py
+++ b/test/agentchat/test_function_call_groupchat.py
@@ -1,9 +1,12 @@
 import autogen
 import pytest
 import sys
-from conftest import skip_openai
+import os
 from test_assistant_agent import KEY_LOC, OAI_CONFIG_LIST
 
+sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
+from conftest import skip_openai  # noqa: E402
+
 try:
     from openai import OpenAI
 except ImportError:
diff --git a/test/agentchat/test_math_user_proxy_agent.py b/test/agentchat/test_math_user_proxy_agent.py
index 787a63f0409..c81449cec42 100644
--- a/test/agentchat/test_math_user_proxy_agent.py
+++ b/test/agentchat/test_math_user_proxy_agent.py
@@ -1,14 +1,17 @@
 import pytest
 import sys
+import os
 import autogen
 from autogen.agentchat.contrib.math_user_proxy_agent import (
     MathUserProxyAgent,
     _remove_print,
     _add_print_to_last_line,
 )
-from conftest import skip_openai
 from test_assistant_agent import KEY_LOC, OAI_CONFIG_LIST
 
+sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
+from conftest import skip_openai  # noqa: E402
+
 try:
     from openai import OpenAI
 except ImportError:
diff --git a/test/oai/test_client.py b/test/oai/test_client.py
index 749c272ea7c..26a05396160 100644
--- a/test/oai/test_client.py
+++ b/test/oai/test_client.py
@@ -1,6 +1,10 @@
 import pytest
 from autogen import OpenAIWrapper, config_list_from_json, config_list_openai_aoai
-from conftest import skip_openai
+import sys
+import os
+
+sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
+from conftest import skip_openai  # noqa: E402
 
 TOOL_ENABLED = False
 try:
diff --git a/test/oai/test_client_stream.py b/test/oai/test_client_stream.py
index c0ff760719a..284df095466 100644
--- a/test/oai/test_client_stream.py
+++ b/test/oai/test_client_stream.py
@@ -1,6 +1,10 @@
 import pytest
 from autogen import OpenAIWrapper, config_list_from_json, config_list_openai_aoai
-from conftest import skip_openai
+import sys
+import os
+
+sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
+from conftest import skip_openai  # noqa: E402
 
 try:
     from openai import OpenAI