diff --git a/Makefile b/Makefile
index b190f7b5..69922f07 100644
--- a/Makefile
+++ b/Makefile
@@ -57,6 +57,7 @@ construct-spec: guard-APIM_ENV
 	$(MAKE) set-target APIM_ENV=$$APIM_ENV
 	$(MAKE) set-access APIM_ENV=$$APIM_ENV
 
+
 build-json-oas-spec: guard-APIM_ENV
 	$(MAKE) construct-spec APIM_ENV=$$APIM_ENV
 	$(MAKE) publish-oas
@@ -75,6 +76,7 @@ bundle-oas:
 generate-sandbox:
 	$(MAKE) build-json-oas-spec APIM_ENV=sandbox
 	jq --slurpfile status sandbox/HealthcheckEndpoint.json '.paths += $$status[0]' build/notify-supplier.json > tmp.json && mv tmp.json build/notify-supplier.json
+	jq '.security = []' build/notify-supplier.json > tmp.json && mv tmp.json build/notify-supplier.json
 	npm run generate-sandbox
 
 serve-swagger:
diff --git a/sandbox/api/openapi.yaml b/sandbox/api/openapi.yaml
index d09ecfb6..7a0742a2 100644
--- a/sandbox/api/openapi.yaml
+++ b/sandbox/api/openapi.yaml
@@ -12,8 +12,6 @@ servers:
   url: http://127.0.0.1:3000
 - description: Public sandbox
   url: https://sandbox-server.nhs.uk/nhs-notify-supplier-api
-security:
-- app-level0: []
 tags:
 - description: ""
   name: letter