diff --git a/backend/alembic/versions/037_credential_profiles_table.py b/backend/alembic/versions/037_credential_profiles_table.py
index 49d65cb..097edaf 100644
--- a/backend/alembic/versions/037_credential_profiles_table.py
+++ b/backend/alembic/versions/037_credential_profiles_table.py
@@ -66,6 +66,9 @@ def upgrade() -> None:
     conn.execute(
         sa.text("GRANT SELECT ON credential_profiles TO poller_user")
     )
+    conn.execute(
+        sa.text("GRANT SELECT, INSERT, UPDATE, DELETE ON credential_profiles TO app_user")
+    )
 
 
 def downgrade() -> None:
diff --git a/backend/alembic/versions/038_snmp_profiles_table.py b/backend/alembic/versions/038_snmp_profiles_table.py
index c7de9be..25c74cb 100644
--- a/backend/alembic/versions/038_snmp_profiles_table.py
+++ b/backend/alembic/versions/038_snmp_profiles_table.py
@@ -652,6 +652,9 @@ def upgrade() -> None:
     conn.execute(
         sa.text("GRANT SELECT ON snmp_profiles TO poller_user")
     )
+    conn.execute(
+        sa.text("GRANT SELECT, INSERT, UPDATE, DELETE ON snmp_profiles TO app_user")
+    )
 
     # -- Seed 6 system profiles --------------------------------------------
     for profile in SEED_PROFILES:
diff --git a/backend/alembic/versions/040_snmp_metrics_hypertable.py b/backend/alembic/versions/040_snmp_metrics_hypertable.py
index 9bdeee6..09bbebf 100644
--- a/backend/alembic/versions/040_snmp_metrics_hypertable.py
+++ b/backend/alembic/versions/040_snmp_metrics_hypertable.py
@@ -75,6 +75,10 @@ def upgrade() -> None:
         """)
     )
 
+    conn.execute(
+        sa.text("GRANT SELECT, INSERT ON snmp_metrics TO app_user")
+    )
+
 
 def downgrade() -> None:
     op.drop_table("snmp_metrics")