diff --git a/e2e/conftest.py b/e2e/conftest.py
index 0295326..b9c9591 100644
--- a/e2e/conftest.py
+++ b/e2e/conftest.py
@@ -48,8 +48,22 @@ def postgres_container():
 
 @pytest_asyncio.fixture(scope='session')
 def minio_container():
-    """MinIO testcontainer used by E2E offload and payload retrieval paths."""
-    minio = MinioContainer()
+    """
+    MinIO testcontainer used by E2E offload and payload retrieval paths.
+
+    `MinioContainer`'s default image (`minio/minio:RELEASE.2022-12-02T19-19-22Z`) no longer
+    pulls — Docker Hub removed the `minio/minio` repository entirely after MinIO's licensing
+    change. Production (`sientia-helm-chart`) already moved to Bitnami's post-Broadcom-migration
+    "legacy" namespace; mirroring that image here. Two more adjustments on top of just the image:
+    the image runs as non-root by default and can't write to the container's anonymous volume
+    without `user='root'`; and Bitnami deprecated `MINIO_ACCESS_KEY`/`MINIO_SECRET_KEY` (what
+    `MinioContainer` sets) in favor of `MINIO_ROOT_USER`/`MINIO_ROOT_PASSWORD` — reusing the same
+    values so `get_client()` still works unmodified.
+    """
+    minio = MinioContainer(image='docker.io/bitnamilegacy/minio:2025.7.23-debian-12-r3')
+    minio.with_env('MINIO_ROOT_USER', minio.access_key)
+    minio.with_env('MINIO_ROOT_PASSWORD', minio.secret_key)
+    minio.with_kwargs(user='root')
     minio.start()
     yield minio
     minio.stop()
diff --git a/e2e/test_predictions_batch_prediction_process.py b/e2e/test_predictions_batch_prediction_process.py
index c3f4767..9925e18 100644
--- a/e2e/test_predictions_batch_prediction_process.py
+++ b/e2e/test_predictions_batch_prediction_process.py
@@ -275,7 +275,7 @@ async def test_scenario_2_2_1_transform_gate_triggers_continue(
         postgres_engine=postgres_engine,
         model_id=model_id,
         prediction_confidence=Decimal(10),
-        comments='Unknown MLFlow API error',
+        comments='Bad data model',
     )
 
 
@@ -403,7 +403,7 @@ async def test_scenario_2_3_1_predict_gate_triggers_continue(
         postgres_engine=postgres_engine,
         model_id=model_id,
         prediction_confidence=Decimal(10),
-        comments='Unknown MLFlow API error',
+        comments='Bad predict model',
     )
 
 
@@ -521,7 +521,7 @@ async def test_scenario_2_4_1_priority_conflict_resolution(
         postgres_engine=postgres_engine,
         model_id=model_id,
         prediction_confidence=Decimal(10),
-        comments='Unknown MLFlow API error',
+        comments='Bad data model',
     )