diff --git a/app.json b/app.json
index 5531954..2e40555 100644
--- a/app.json
+++ b/app.json
@@ -45,19 +45,23 @@
         },
         "AWS_BUCKET": {
             "description": "AWS bucket name for recipe/user image storage. Required when MEDIA_DISK is 's3-public'.",
-            "value": ""
+            "value": "",
+            "required": false
         },
         "AWS_DEFAULT_REGION": {
             "description": "AWS region for AWS_BUCKET. Required when MEDIA_DISK is 's3-public'.",
-            "value": ""
+            "value": "",
+            "required": false
         },
         "AWS_ACCESS_KEY_ID": {
             "description": "AWS access key ID for AWS_BUCKET. Required when MEDIA_DISK is 's3-public'.",
-            "value": ""
+            "value": "",
+            "required": false
         },
         "AWS_SECRET_ACCESS_KEY": {
             "description": "AWS secret key ID for AWS_ACCESS_KEY_ID. Required when MEDIA_DISK is 's3-public'.",
-            "value": ""
+            "value": "",
+            "required": false
         }
     },
     "scripts": {