diff --git a/migrations/postgres/V16__sync_system.sql b/migrations/postgres/V16__sync_system.sql
index 5a54b7a..8a87823 100644
--- a/migrations/postgres/V16__sync_system.sql
+++ b/migrations/postgres/V16__sync_system.sql
@@ -39,6 +39,13 @@ CREATE INDEX idx_sync_log_sequence ON sync_log(sequence);
 CREATE INDEX idx_sync_log_path ON sync_log(path);
 CREATE INDEX idx_sync_log_timestamp ON sync_log(timestamp);
 
+-- Sequence counter for sync log
+CREATE TABLE sync_sequence (
+    id INTEGER PRIMARY KEY CHECK (id = 1),
+    current_value BIGINT NOT NULL DEFAULT 0
+);
+INSERT INTO sync_sequence (id, current_value) VALUES (1, 0);
+
 -- Device sync state - tracks sync status per device per file
 CREATE TABLE device_sync_state (
     device_id TEXT NOT NULL REFERENCES sync_devices(id) ON DELETE CASCADE,