diff --git a/build_helpers/schema.json b/build_helpers/schema.json
index 5d07b4ad1..7c4ea3596 100644
--- a/build_helpers/schema.json
+++ b/build_helpers/schema.json
@@ -1063,7 +1063,8 @@
         "jwt_secret_key": {
           "description": "Secret key for JWT authentication.",
           "type": "string",
-          "default": "somethingRandomSomethingRandom123"
+          "default": "somethingRandomSomethingRandom123",
+          "minLength": 32
         },
         "CORS_origins": {
           "description": "List of allowed CORS origins.",