diff --git a/_integration-test/test_01_basics.py b/_integration-test/test_01_basics.py
index 7218f857d54..c72f224fb58 100644
--- a/_integration-test/test_01_basics.py
+++ b/_integration-test/test_01_basics.py
@@ -74,16 +74,28 @@ def authenticated_session():
     client = httpx.Client()
     client.get(SENTRY_TEST_HOST, follow_redirects=True)
     login_csrf_token = client.cookies["sc"]
-    login_response = client.post(
-        f"{SENTRY_TEST_HOST}/auth/login/sentry/",
-        follow_redirects=True,
-        data={
-            "op": "login",
-            "username": TEST_USER,
-            "password": TEST_PASS,
-            "csrfmiddlewaretoken": login_csrf_token,
+    # Password login goes through the auth API used by the React login page;
+    # the legacy HTML login form was removed in getsentry/sentry#126712.
+    # Like the React page, fetch the auth config first: it sets the session
+    # test cookie that the login endpoint requires.
+    auth_config_response = client.get(
+        f"{SENTRY_TEST_HOST}/api/0/auth/config/",
+        headers={"Referer": f"{SENTRY_TEST_HOST}/auth/login/"},
+    )
+    assert auth_config_response.status_code == 200, auth_config_response.text
+    api_login_response = client.post(
+        f"{SENTRY_TEST_HOST}/api/0/auth/login/",
+        json={"username": TEST_USER, "password": TEST_PASS},
+        headers={
+            "Referer": f"{SENTRY_TEST_HOST}/auth/login/",
+            "X-CSRFToken": login_csrf_token,
         },
-        headers={"Referer": f"{SENTRY_TEST_HOST}/auth/login/sentry/"},
+    )
+    assert api_login_response.status_code == 200, api_login_response.text
+    login_response = client.get(
+        SENTRY_TEST_HOST,
+        follow_redirects=True,
+        headers={"Referer": SENTRY_TEST_HOST},
     )
     assert login_response.status_code == 200
     parser = BeautifulSoup(login_response.text, "html.parser")
diff --git a/docker-compose.yml b/docker-compose.yml
index 09bfee7a759..de09815f0d9 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -674,7 +674,7 @@ services:
     environment:
       SENTRY_KAFKA_BROKERS_PROFILING: "kafka:9092"
       SENTRY_KAFKA_BROKERS_OCCURRENCES: "kafka:9092"
-      SENTRY_BUCKET_PROFILES: "s3://profiles?region=us-east-1&endpoint=seaweedfs:8333&s3ForcePathStyle=true&disableSSL=true"
+      SENTRY_BUCKET_PROFILES: "s3://profiles?region=us-east-1&endpoint=seaweedfs:8333&use_path_style=true&disable_https=true"
       AWS_ACCESS_KEY: "sentry"
       AWS_SECRET_KEY: "sentry"
       SENTRY_SNUBA_HOST: "http://snuba-api:1218"