diff --git a/src/main/kotlin/com/android/trisolarisserver/config/PayuPaymentLinkSettingsSchemaFix.kt b/src/main/kotlin/com/android/trisolarisserver/config/PayuPaymentLinkSettingsSchemaFix.kt
index c5d79d1..b9de570 100644
--- a/src/main/kotlin/com/android/trisolarisserver/config/PayuPaymentLinkSettingsSchemaFix.kt
+++ b/src/main/kotlin/com/android/trisolarisserver/config/PayuPaymentLinkSettingsSchemaFix.kt
@@ -39,6 +39,8 @@ class PayuPaymentLinkSettingsSchemaFix(
         ensureColumn("payu_payment_link_settings", "client_secret", "text")
         ensureColumn("payu_payment_link_settings", "access_token", "text")
         ensureColumn("payu_payment_link_settings", "token_expires_at", "timestamptz")
+
+        jdbcTemplate.execute("alter table payu_payment_link_settings alter column access_token drop not null")
     }
 
     private fun ensureColumn(table: String, column: String, type: String) {