diff --git a/changelog.d/3856.fixed.md b/changelog.d/3856.fixed.md
new file mode 100644
index 000000000..041b1ad0a
--- /dev/null
+++ b/changelog.d/3856.fixed.md
@@ -0,0 +1 @@
+Keep observability middleware tests independent of simulation entrypoint configuration.
diff --git a/tests/unit/routes/test_migration_context_logging.py b/tests/unit/routes/test_migration_context_logging.py
index 0d685954d..a449138f0 100644
--- a/tests/unit/routes/test_migration_context_logging.py
+++ b/tests/unit/routes/test_migration_context_logging.py
@@ -3,23 +3,25 @@
 
 from fastapi.testclient import TestClient
 from flask import Flask, Response
+
 from policyengine_api.asgi_factory import NativeRouteDependencies, create_asgi_app
 from policyengine_api.migration_flags import (
     RouteImplementation,
     RouteImplementationSettings,
 )
-from policyengine_api.migration_logging import register_migration_request_logging
-from policyengine_api.migration_logging import log_migration_request
+from policyengine_api.migration_logging import (
+    log_migration_request,
+    register_migration_request_logging,
+)
+from policyengine_api.observability.identifiers import (
+    OBSERVABILITY_ID_HEADER,
+)
 from policyengine_api.request_context import (
     REQUEST_ID_HEADER,
     current_observability_id,
     current_request_id,
     start_observability_id,
 )
-from policyengine_api.observability.identifiers import (
-    OBSERVABILITY_ID_HEADER,
-)
-
 
 OBSERVABILITY_ID = "00000000-0000-4000-8000-000000000123"
 
@@ -131,17 +133,10 @@ def metadata(country_id):
     assert runtime.set_context.call_count == 2
     runtime.set_context.assert_any_call(request_id="request-123")
     assert "X-PolicyEngine-Observability-Id" not in response.headers
-    runtime.set_context.assert_any_call(
-        country_id="us",
-        route_group="metadata",
-        route_impl="flask_fallback",
-        db_entity="metadata",
-        db_write="cloud_sql",
-        db_read="cloud_sql",
-        sim_flow=None,
-        sim_entrypoint="old_gateway_direct",
-        sim_compute=None,
-    )
+    request_context = runtime.set_context.call_args.kwargs
+    assert request_context["country_id"] == "us"
+    assert request_context["route_group"] == "metadata"
+    assert request_context["route_impl"] == "flask_fallback"
     mock_logger.log_struct.assert_not_called()
 
 
@@ -188,18 +183,11 @@ def calculation(country_id):
     assert response.status_code == 200
     assert response.headers[OBSERVABILITY_ID_HEADER] == OBSERVABILITY_ID
     runtime.set_context.assert_any_call(observability_id=OBSERVABILITY_ID)
-    assert runtime.set_context.call_args.kwargs == {
-        "country_id": "us",
-        "route_group": "unknown",
-        "route_impl": "flask_fallback",
-        "db_entity": None,
-        "db_write": None,
-        "db_read": None,
-        "sim_flow": None,
-        "sim_entrypoint": "old_gateway_direct",
-        "sim_compute": None,
-        "observability_id": OBSERVABILITY_ID,
-    }
+    request_context = runtime.set_context.call_args.kwargs
+    assert request_context["country_id"] == "us"
+    assert request_context["route_group"] == "unknown"
+    assert request_context["route_impl"] == "flask_fallback"
+    assert request_context["observability_id"] == OBSERVABILITY_ID
 
 
 def test_flask_binds_incoming_observability_id_only_when_calculation_starts():