diff --git a/hasheous-lib/Schema/hasheous-1031.sql b/hasheous-lib/Schema/hasheous-1031.sql
new file mode 100644
index 0000000..28bf764
--- /dev/null
+++ b/hasheous-lib/Schema/hasheous-1031.sql
@@ -0,0 +1,3 @@
+ALTER TABLE `DataObject_SignatureMap` CHANGE `SignatureId` `SignatureId` BIGINT NOT NULL;
+
+ALTER TABLE `DataObject_SignatureMap` ADD CONSTRAINT `fk_DO_Signatures_Games` FOREIGN KEY (`SignatureId`) REFERENCES `Signatures_Games` (`Id`) ON DELETE CASCADE;