diff --git a/pyproject.toml b/pyproject.toml
index 8a0f14f79..d5a9f71e1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,10 @@ opentelemetry = [
     "opentelemetry-sdk>=1.11.1,<2",
 ]
 pydantic = ["pydantic>=2.0.0,<3"]
-openai-agents = ["openai-agents >= 0.0.19"]
+openai-agents = [
+    "openai-agents >= 0.0.19,<0.1",
+    "eval-type-backport>=0.2.2; python_version < '3.10'"
+]
 
 [project.urls]
 Homepage = "https://github.com/temporalio/sdk-python"
diff --git a/temporalio/contrib/openai_agents/invoke_model_activity.py b/temporalio/contrib/openai_agents/invoke_model_activity.py
index b7a370ad8..10b7370cb 100644
--- a/temporalio/contrib/openai_agents/invoke_model_activity.py
+++ b/temporalio/contrib/openai_agents/invoke_model_activity.py
@@ -6,7 +6,7 @@
 import enum
 import json
 from dataclasses import dataclass
-from typing import Any, Optional, TypedDict, Union, cast
+from typing import Any, Optional, Union, cast
 
 from agents import (
     AgentOutputSchemaBase,
@@ -24,7 +24,7 @@
     WebSearchTool,
 )
 from agents.models.multi_provider import MultiProvider
-from typing_extensions import Required
+from typing_extensions import Required, TypedDict
 
 from temporalio import activity, workflow
 from temporalio.contrib.openai_agents._heartbeat_decorator import _auto_heartbeater
diff --git a/tests/contrib/test_openai.py b/tests/contrib/test_openai.py
index e0adcad97..be1dbf91f 100644
--- a/tests/contrib/test_openai.py
+++ b/tests/contrib/test_openai.py
@@ -140,8 +140,9 @@ async def run(self, prompt: str) -> str:
 
 
 async def test_hello_world_agent(client: Client):
-    if sys.version_info < (3, 11):
-        pytest.skip("Open AI support has type errors on 3.9 and 3.11")
+    new_config = client.config()
+    new_config["data_converter"] = open_ai_data_converter
+    client = Client(**new_config)
 
     with set_open_ai_agent_temporal_overrides(
         start_to_close_timeout=timedelta(seconds=10)
@@ -237,8 +238,9 @@ async def run(self, question: str) -> str:
 
 
 async def test_tool_workflow(client: Client):
-    if sys.version_info < (3, 11):
-        pytest.skip("Open AI support has type errors on 3.9 and 3.11")
+    new_config = client.config()
+    new_config["data_converter"] = open_ai_data_converter
+    client = Client(**new_config)
 
     with set_open_ai_agent_temporal_overrides(
         start_to_close_timeout=timedelta(seconds=10)
@@ -455,8 +457,9 @@ async def run(self, query: str):
 
 
 async def test_research_workflow(client: Client):
-    if sys.version_info < (3, 11):
-        pytest.skip("Open AI support has type errors on 3.9 and 3.11")
+    new_config = client.config()
+    new_config["data_converter"] = open_ai_data_converter
+    client = Client(**new_config)
 
     global response_index
     response_index = 0
@@ -668,9 +671,6 @@ class AgentAsToolsModel(TestModel):
 
 
 async def test_agents_as_tools_workflow(client: Client):
-    if sys.version_info < (3, 11):
-        pytest.skip("Open AI support has type errors on 3.9 and 3.10")
-
     new_config = client.config()
     new_config["data_converter"] = open_ai_data_converter
     client = Client(**new_config)
@@ -1027,9 +1027,6 @@ def validate_process_user_message(self, input: ProcessUserMessageInput) -> None:
 
 
 async def test_customer_service_workflow(client: Client):
-    if sys.version_info < (3, 11):
-        pytest.skip("Open AI support has type errors on 3.9 and 3.11")
-
     new_config = client.config()
     new_config["data_converter"] = open_ai_data_converter
     client = Client(**new_config)
diff --git a/uv.lock b/uv.lock
index 6a88d50ab..9d80402aa 100644
--- a/uv.lock
+++ b/uv.lock
@@ -355,6 +355,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/8f/d7/9322c609343d929e75e7e5e6255e614fcc67572cfd083959cdef3b7aad79/docutils-0.21.2-py3-none-any.whl", hash = "sha256:dafca5b9e384f0e419294eb4d2ff9fa826435bf15f15b7bd45723e8ad76811b2", size = 587408, upload-time = "2024-04-23T18:57:14.835Z" },
 ]
 
+[[package]]
+name = "eval-type-backport"
+version = "0.2.2"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/30/ea/8b0ac4469d4c347c6a385ff09dc3c048c2d021696664e26c7ee6791631b5/eval_type_backport-0.2.2.tar.gz", hash = "sha256:f0576b4cf01ebb5bd358d02314d31846af5e07678387486e2c798af0e7d849c1", size = 9079, upload-time = "2024-12-21T20:09:46.005Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/ce/31/55cd413eaccd39125368be33c46de24a1f639f2e12349b0361b4678f3915/eval_type_backport-0.2.2-py3-none-any.whl", hash = "sha256:cb6ad7c393517f476f96d456d0412ea80f0a8cf96f6892834cd9340149111b0a", size = 5830, upload-time = "2024-12-21T20:09:44.175Z" },
+]
+
 [[package]]
 name = "exceptiongroup"
 version = "1.3.0"
@@ -1608,6 +1617,7 @@ grpc = [
     { name = "grpcio" },
 ]
 openai-agents = [
+    { name = "eval-type-backport", marker = "python_full_version < '3.10'" },
     { name = "openai-agents" },
 ]
 opentelemetry = [
@@ -1640,8 +1650,9 @@ dev = [
 
 [package.metadata]
 requires-dist = [
+    { name = "eval-type-backport", marker = "python_full_version < '3.10' and extra == 'openai-agents'", specifier = ">=0.2.2" },
     { name = "grpcio", marker = "extra == 'grpc'", specifier = ">=1.48.2,<2" },
-    { name = "openai-agents", marker = "extra == 'openai-agents'", specifier = ">=0.0.19" },
+    { name = "openai-agents", marker = "extra == 'openai-agents'", specifier = ">=0.0.19,<0.1" },
     { name = "opentelemetry-api", marker = "extra == 'opentelemetry'", specifier = ">=1.11.1,<2" },
     { name = "opentelemetry-sdk", marker = "extra == 'opentelemetry'", specifier = ">=1.11.1,<2" },
     { name = "protobuf", specifier = ">=3.20,<6" },