diff --git a/src/types/database.ts b/src/types/database.ts
index 5ec2cae9..856251f4 100644
--- a/src/types/database.ts
+++ b/src/types/database.ts
@@ -527,6 +527,7 @@ type MssqlConnectionNode = {
     appName?: string
     abortTransactionOnError?: boolean
     trustedConnection?: boolean
+    instanceName?: string
     enableArithAbort?: boolean
     isolationLevel?:
       | 'READ_UNCOMMITTED'