diff --git a/aws_project_costs/project-cost-schema.json b/aws_project_costs/project-cost-schema.json
index e649ea1..bfb466f 100644
--- a/aws_project_costs/project-cost-schema.json
+++ b/aws_project_costs/project-cost-schema.json
@@ -1,5 +1,5 @@
 {
-  "$schema": "http://json-schema.org/draft/2020-12/schema",
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
   "$id": "https://github.com/hic-infra/hic-aws-project-cost",
   "title": "AWS project cost configuration",
   "type": "object",