diff --git a/Makefile b/Makefile
index e629494..4bfd878 100644
--- a/Makefile
+++ b/Makefile
@@ -9,6 +9,9 @@ TEST_FILE ?= tests/unit_tests/
 test:
 	python -m pytest $(TEST_FILE)
 
+integration_tests:
+	python -m pytest tests/integration_tests 
+
 test_watch:
 	python -m ptw --snapshot-update --now . -- -vv tests/unit_tests
 
diff --git a/README.md b/README.md
index 6a5d6c2..e869ed1 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ The primary [search tool](./src/react_agent/tools.py) [^1] used is [Tavily](http
 The defaults values for `model` are shown below:
 
 ```yaml
-model: anthropic/claude-3-5-sonnet-20240620
+model: claude-sonnet-4-5-20250929
 ```
 
 Follow the instructions below to get set up, or pick one of the additional options.
diff --git a/pyproject.toml b/pyproject.toml
index 06e5060..1e44a90 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -62,6 +62,7 @@ convention = "google"
 
 [dependency-groups]
 dev = [
+    "anyio>=4.7.0",
     "langgraph-cli[inmem]>=0.1.71",
     "pytest>=8.3.5",
 ]
diff --git a/src/react_agent/context.py b/src/react_agent/context.py
index d691776..238ccfd 100644
--- a/src/react_agent/context.py
+++ b/src/react_agent/context.py
@@ -22,7 +22,7 @@ class Context:
     )
 
     model: Annotated[str, {"__template_metadata__": {"kind": "llm"}}] = field(
-        default="anthropic/claude-4-5",
+        default="anthropic/claude-sonnet-4-5-20250929",
         metadata={
             "description": "The name of the language model to use for the agent's main interactions. "
             "Should be in the form: provider/model-name."
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..ad84bd0
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,7 @@
+import pytest
+
+
+@pytest.fixture(scope="session")
+def anyio_backend():
+    return "asyncio"
+
diff --git a/tests/integration_tests/test_graph.py b/tests/integration_tests/test_graph.py
index 8c4ac57..a84adc3 100644
--- a/tests/integration_tests/test_graph.py
+++ b/tests/integration_tests/test_graph.py
@@ -1,12 +1,11 @@
 import pytest
-from langsmith import unit
 
 from react_agent import graph
 from react_agent.context import Context
 
+pytestmark = pytest.mark.anyio
+
 
-@pytest.mark.asyncio
-@unit
 async def test_react_agent_simple_passthrough() -> None:
     res = await graph.ainvoke(
         {"messages": [("user", "Who is the founder of LangChain?")]},  # type: ignore