diff --git a/src/codex/_client.py b/src/codex/_client.py
index d9e4432..884d2f3 100644
--- a/src/codex/_client.py
+++ b/src/codex/_client.py
@@ -50,8 +50,8 @@
 ]
 
 ENVIRONMENTS: Dict[str, str] = {
-    "production": "https://api-alpha-o3gxj3oajfu.cleanlab.ai",
-    "staging": "https://api-alpha-staging-o3gxj3oajfu.cleanlab.ai",
+    "production": "https://api-codex-o3gxj3oajfu.cleanlab.ai",
+    "staging": "https://api-codex-staging-o3gxj3oajfu.cleanlab.ai",
     "local": "http://localhost:8080",
 }
 
diff --git a/tests/test_client.py b/tests/test_client.py
index d000ab1..3eaa653 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -522,7 +522,7 @@ def test_base_url_env(self) -> None:
                 Codex(_strict_response_validation=True, environment="production")
 
             client = Codex(base_url=None, _strict_response_validation=True, environment="production")
-            assert str(client.base_url).startswith("https://api-alpha-o3gxj3oajfu.cleanlab.ai")
+            assert str(client.base_url).startswith("https://api-codex-o3gxj3oajfu.cleanlab.ai")
 
     @pytest.mark.parametrize(
         "client",
@@ -1263,7 +1263,7 @@ def test_base_url_env(self) -> None:
                 AsyncCodex(_strict_response_validation=True, environment="production")
 
             client = AsyncCodex(base_url=None, _strict_response_validation=True, environment="production")
-            assert str(client.base_url).startswith("https://api-alpha-o3gxj3oajfu.cleanlab.ai")
+            assert str(client.base_url).startswith("https://api-codex-o3gxj3oajfu.cleanlab.ai")
 
     @pytest.mark.parametrize(
         "client",