diff --git a/posthog/clickhouse/migrations/0285_ai_events_gate_drift_check.py b/posthog/clickhouse/migrations/0285_ai_events_gate_drift_check.py
new file mode 100644
index 000000000000..5dfd8d97ffd5
--- /dev/null
+++ b/posthog/clickhouse/migrations/0285_ai_events_gate_drift_check.py
@@ -0,0 +1,11 @@
+from posthog.clickhouse.client.connection import NodeRole
+from posthog.clickhouse.client.migration_tools import run_sql_with_exceptions
+
+operations = [
+    run_sql_with_exceptions(
+        "ALTER TABLE sharded_ai_events ADD COLUMN IF NOT EXISTS gate_drift_sanity_check UInt8 DEFAULT 0",
+        node_roles=[NodeRole.AI_EVENTS],
+        sharded=False,
+        is_alter_on_replicated_table=True,
+    ),
+]
diff --git a/posthog/clickhouse/migrations/max_migration.txt b/posthog/clickhouse/migrations/max_migration.txt
index a756096508b9..6e251dc73e33 100644
--- a/posthog/clickhouse/migrations/max_migration.txt
+++ b/posthog/clickhouse/migrations/max_migration.txt
@@ -1 +1 @@
-0284_message_assets
+0285_ai_events_gate_drift_check
\ No newline at end of file