diff --git a/src/funcchain/components.py b/src/funcchain/components.py
index 3e73866..4654dcf 100644
--- a/src/funcchain/components.py
+++ b/src/funcchain/components.py
@@ -15,6 +15,9 @@ class Route(TypedDict):
 class ChatRouter(BaseModel):
     routes: Routes
 
+    class Config:
+        arbitrary_types_allowed = True
+
     @field_validator("routes")
     def validate_routes(cls, v: Routes) -> Routes:
         if "default" not in v.keys():
diff --git a/tests/router_test.py b/tests/router_test.py
new file mode 100644
index 0000000..67b38a6
--- /dev/null
+++ b/tests/router_test.py
@@ -0,0 +1,40 @@
+from funcchain.components import ChatRouter
+
+
+def handle_pdf_requests(user_query: str) -> str:
+    return f"Handling PDF requests with user query: {user_query}"
+
+
+def handle_csv_requests(user_query: str) -> str:
+    return f"Handling CSV requests with user query: {user_query}"
+
+
+def handle_default_requests(user_query: str) -> str:
+    return f"Handling DEFAULT requests with user query: {user_query}"
+
+
+router = ChatRouter(
+    routes={
+        "pdf": {
+            "handler": handle_pdf_requests,
+            "description": "Call this for requests including PDF Files.",
+        },
+        "csv": {
+            "handler": handle_csv_requests,
+            "description": "Call this for requests including CSV Files.",
+        },
+        "default": handle_default_requests,
+    },
+)
+
+
+def test_router() -> None:
+    assert "Handling CSV" in router.invoke_route("Can you summarize this csv?")
+
+    assert "Handling PDF" in router.invoke_route("Can you summarize this pdf?")
+
+    assert "Handling DEFAULT" in router.invoke_route("Hey, whatsup?")
+
+
+if __name__ == "__main__":
+    test_router()