diff --git a/schematics/ng-add/schema.json b/schematics/ng-add/schema.json
index de548279..a8aa66cd 100644
--- a/schematics/ng-add/schema.json
+++ b/schematics/ng-add/schema.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://json-schema.org/schema",
+  "$schema": "http://json-schema.org/schema",
   "id": "ngAdd",
   "title": "add NG-ZORRO-MOBILE",
   "type": "object",
diff --git a/scripts/schematics/template/schema.json b/scripts/schematics/template/schema.json
index 258ebec3..e1dbe1c7 100644
--- a/scripts/schematics/template/schema.json
+++ b/scripts/schematics/template/schema.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "https://json-schema.org/schema",
+  "$schema": "http://json-schema.org/schema",
   "id": "AddNgZorroMobileTable",
   "title": "Add NG-ZORRO-MOBILE Table",
   "type": "object",