diff --git a/changelog.d/3789.fixed.md b/changelog.d/3789.fixed.md
new file mode 100644
index 000000000..276fffe01
--- /dev/null
+++ b/changelog.d/3789.fixed.md
@@ -0,0 +1 @@
+Remove a brittle architecture test that depended on a Towncrier fragment remaining after release.
diff --git a/tests/unit/services/test_service_owned_session_architecture.py b/tests/unit/services/test_service_owned_session_architecture.py
index 4f41dd600..dbf89e8ef 100644
--- a/tests/unit/services/test_service_owned_session_architecture.py
+++ b/tests/unit/services/test_service_owned_session_architecture.py
@@ -120,11 +120,3 @@ def test_removed_persistence_abstractions_stay_removed():
     )
     assert [path for path in removed_files if (PACKAGE_ROOT / path).exists()] == []
     assert not any((PACKAGE_ROOT / "endpoints").rglob("*.py"))
-
-
-def test_changelog_describes_service_owned_sessions():
-    changelog = (PROJECT_ROOT / "changelog.d/3788.changed.md").read_text(
-        encoding="utf-8"
-    )
-    assert "service-owned" in changelog
-    assert "caller-owned" not in changelog