diff --git a/backend/migrations/20230516140626_capture_check_increase.down.sql b/backend/migrations/20230516140626_capture_check_increase.down.sql
new file mode 100644
index 0000000000..d2f607c5b8
--- /dev/null
+++ b/backend/migrations/20230516140626_capture_check_increase.down.sql
@@ -0,0 +1 @@
+-- Add down migration script here
diff --git a/backend/migrations/20230516140626_capture_check_increase.up.sql b/backend/migrations/20230516140626_capture_check_increase.up.sql
new file mode 100644
index 0000000000..0d35df0483
--- /dev/null
+++ b/backend/migrations/20230516140626_capture_check_increase.up.sql
@@ -0,0 +1,3 @@
+-- Add up migration script here
+alter table capture DROP constraint capture_payload_check;
+alter table capture add constraint caputre_payload_too_big check  (length(payload::text) < 512 * 1024);