diff --git a/src/fastmcp/utilities/tests.py b/src/fastmcp/utilities/tests.py
index cb697129f..4fa73006e 100644
--- a/src/fastmcp/utilities/tests.py
+++ b/src/fastmcp/utilities/tests.py
@@ -11,6 +11,7 @@ from typing import TYPE_CHECKING, Any, Literal
 import uvicorn
 
 from fastmcp.settings import settings
+from fastmcp.utilities.http import find_available_port
 
 if TYPE_CHECKING:
     from fastmcp.server.server import FastMCP
@@ -84,9 +85,7 @@ def run_server_in_process(
         The server URL.
     """
     host = "127.0.0.1"
-    with socket.socket() as s:
-        s.bind((host, 0))
-        port = s.getsockname()[1]
+    port = find_available_port()
 
     proc = multiprocessing.Process(
         target=server_fn, args=(host, port, *args), daemon=True
diff --git a/tests/auth/test_oauth_client.py b/tests/auth/test_oauth_client.py
index e743e25c3..2a1fd4c23 100644
--- a/tests/auth/test_oauth_client.py
+++ b/tests/auth/test_oauth_client.py
@@ -11,7 +11,7 @@ import fastmcp.client.auth  # Import module, not the function directly
 from fastmcp.client import Client
 from fastmcp.client.transports import StreamableHttpTransport
 from fastmcp.server.auth.auth import ClientRegistrationOptions
-from fastmcp.server.auth.providers.in_memory import InMemory
+from fastmcp.server.auth.in_memory_provider import InMemoryOAuthProvider as InMemory
 from fastmcp.server.server import FastMCP
 from fastmcp.utilities.tests import run_server_in_process