diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 62324a4..66fe889 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -251,8 +251,8 @@ model Branch {
   telephoneNo String
 
   permitNo         String
-  permitIssueDate  DateTime @db.Date
-  permitExpireDate DateTime @db.Date
+  permitIssueDate  DateTime? @db.Date
+  permitExpireDate DateTime? @db.Date
 
   address   String
   addressEN String
diff --git a/src/controllers/01-branch-controller.ts b/src/controllers/01-branch-controller.ts
index 04449c6..746f3bf 100644
--- a/src/controllers/01-branch-controller.ts
+++ b/src/controllers/01-branch-controller.ts
@@ -65,8 +65,8 @@ type BranchCreate = {
   nameEN: string;
   name: string;
   permitNo: string;
-  permitIssueDate: Date;
-  permitExpireDate: Date;
+  permitIssueDate?: Date | null;
+  permitExpireDate?: Date | null;
   addressEN: string;
   address: string;
   soi?: string | null;
@@ -108,8 +108,8 @@ type BranchUpdate = {
   nameEN?: string;
   name?: string;
   permitNo?: string;
-  permitIssueDate?: Date;
-  permitExpireDate?: Date;
+  permitIssueDate?: Date | null;
+  permitExpireDate?: Date | null;
   addressEN?: string;
   address?: string;
   soi?: string | null;