diff --git a/src/Contrib.KafkaFlow.ProcessManagers.Postgres/schema/0003.BigSerial.sql b/src/Contrib.KafkaFlow.ProcessManagers.Postgres/schema/0003.BigSerial.sql
new file mode 100644
index 0000000..34dff37
--- /dev/null
+++ b/src/Contrib.KafkaFlow.ProcessManagers.Postgres/schema/0003.BigSerial.sql
@@ -0,0 +1 @@
+ALTER TABLE "process_managers"."processes" ALTER COLUMN "sequence_id" TYPE BIGINT;