diff --git a/backend/app/services/source_freshness_service.py b/backend/app/services/source_freshness_service.py
index ab8dc7cb..554dded6 100644
--- a/backend/app/services/source_freshness_service.py
+++ b/backend/app/services/source_freshness_service.py
@@ -28,6 +28,9 @@ class SourcePolicy:
 
 
 SOURCE_POLICIES: dict[str, SourcePolicy] = {
+    "ngi_adminvector": SourcePolicy("NGI AdminVector bestuurlijke grenzen", "edition"),
+    "rbins_marine_reporting_units": SourcePolicy("RBINS mariene rapportage-eenheden", "edition"),
+    "rbins_msp_2026": SourcePolicy("Belgisch Marien Ruimtelijk Plan 2026-2034", "edition"),
     "grb": SourcePolicy("GRB gebouwen en context", "rolling_snapshot", 90),
     "vrbg": SourcePolicy("VRBG wegenregister", "rolling_snapshot", 90),
     "digitaal_vlaanderen_buildings_addresses_register": SourcePolicy(
diff --git a/backend/tests/test_rc10_data_operations.py b/backend/tests/test_rc10_data_operations.py
index 352ae41b..57ec1f97 100644
--- a/backend/tests/test_rc10_data_operations.py
+++ b/backend/tests/test_rc10_data_operations.py
@@ -317,6 +317,17 @@ def test_source_family_report_covers_national_regional_and_maritime(
     }
 
 
+def test_national_and_maritime_sources_have_explicit_freshness_policies() -> None:
+    from app.services.source_freshness_service import SOURCE_POLICIES
+
+    for source_name in (
+        "ngi_adminvector",
+        "rbins_marine_reporting_units",
+        "rbins_msp_2026",
+    ):
+        assert SOURCE_POLICIES[source_name].refresh_policy == "edition"
+
+
 def test_cleanup_commands_require_backup_confirmation_and_read_only_mount() -> None:
     generic = (SCRIPTS / "cleanup_storage_artifacts.py").read_text(encoding="utf-8")
     demo = (ROOT / "backend/scripts/cleanup_demo_artifacts.py").read_text(encoding="utf-8")