diff --git a/homeassistant/components/google_assistant_sdk/application_credentials.py b/homeassistant/components/google_assistant_sdk/application_credentials.py
index 74cefb14b65..c8a7922bc7a 100644
--- a/homeassistant/components/google_assistant_sdk/application_credentials.py
+++ b/homeassistant/components/google_assistant_sdk/application_credentials.py
@@ -1,6 +1,4 @@
 """application_credentials platform for Google Assistant SDK."""
-import oauth2client
-
 from homeassistant.components.application_credentials import AuthorizationServer
 from homeassistant.core import HomeAssistant
 
@@ -8,8 +6,8 @@ from homeassistant.core import HomeAssistant
 async def async_get_authorization_server(hass: HomeAssistant) -> AuthorizationServer:
     """Return authorization server."""
     return AuthorizationServer(
-        oauth2client.GOOGLE_AUTH_URI,
-        oauth2client.GOOGLE_TOKEN_URI,
+        "https://accounts.google.com/o/oauth2/v2/auth",
+        "https://oauth2.googleapis.com/token",
     )
 
 
diff --git a/tests/components/google_assistant_sdk/test_config_flow.py b/tests/components/google_assistant_sdk/test_config_flow.py
index a0f22d814b1..f92ef41420d 100644
--- a/tests/components/google_assistant_sdk/test_config_flow.py
+++ b/tests/components/google_assistant_sdk/test_config_flow.py
@@ -1,8 +1,6 @@
 """Test the Google Assistant SDK config flow."""
 from unittest.mock import patch
 
-import oauth2client
-
 from homeassistant import config_entries
 from homeassistant.components.google_assistant_sdk.const import DOMAIN
 from homeassistant.core import HomeAssistant
@@ -12,6 +10,8 @@ from .conftest import CLIENT_ID, ComponentSetup
 
 from tests.common import MockConfigEntry
 
+GOOGLE_AUTH_URI = "https://accounts.google.com/o/oauth2/v2/auth"
+GOOGLE_TOKEN_URI = "https://oauth2.googleapis.com/token"
 TITLE = "Google Assistant SDK"
 
 
@@ -35,7 +35,7 @@ async def test_full_flow(
     )
 
     assert result["url"] == (
-        f"{oauth2client.GOOGLE_AUTH_URI}?response_type=code&client_id={CLIENT_ID}"
+        f"{GOOGLE_AUTH_URI}?response_type=code&client_id={CLIENT_ID}"
         "&redirect_uri=https://example.com/auth/external/callback"
         f"&state={state}&scope=https://www.googleapis.com/auth/assistant-sdk-prototype"
         "&access_type=offline&prompt=consent"
@@ -47,7 +47,7 @@ async def test_full_flow(
     assert resp.headers["content-type"] == "text/html; charset=utf-8"
 
     aioclient_mock.post(
-        oauth2client.GOOGLE_TOKEN_URI,
+        GOOGLE_TOKEN_URI,
         json={
             "refresh_token": "mock-refresh-token",
             "access_token": "mock-access-token",
@@ -112,7 +112,7 @@ async def test_reauth(
         },
     )
     assert result["url"] == (
-        f"{oauth2client.GOOGLE_AUTH_URI}?response_type=code&client_id={CLIENT_ID}"
+        f"{GOOGLE_AUTH_URI}?response_type=code&client_id={CLIENT_ID}"
         "&redirect_uri=https://example.com/auth/external/callback"
         f"&state={state}&scope=https://www.googleapis.com/auth/assistant-sdk-prototype"
         "&access_type=offline&prompt=consent"
@@ -123,7 +123,7 @@ async def test_reauth(
     assert resp.headers["content-type"] == "text/html; charset=utf-8"
 
     aioclient_mock.post(
-        oauth2client.GOOGLE_TOKEN_URI,
+        GOOGLE_TOKEN_URI,
         json={
             "refresh_token": "mock-refresh-token",
             "access_token": "updated-access-token",
@@ -181,7 +181,7 @@ async def test_single_instance_allowed(
     )
 
     assert result["url"] == (
-        f"{oauth2client.GOOGLE_AUTH_URI}?response_type=code&client_id={CLIENT_ID}"
+        f"{GOOGLE_AUTH_URI}?response_type=code&client_id={CLIENT_ID}"
         "&redirect_uri=https://example.com/auth/external/callback"
         f"&state={state}&scope=https://www.googleapis.com/auth/assistant-sdk-prototype"
         "&access_type=offline&prompt=consent"
@@ -193,7 +193,7 @@ async def test_single_instance_allowed(
     assert resp.headers["content-type"] == "text/html; charset=utf-8"
 
     aioclient_mock.post(
-        oauth2client.GOOGLE_TOKEN_URI,
+        GOOGLE_TOKEN_URI,
         json={
             "refresh_token": "mock-refresh-token",
             "access_token": "mock-access-token",