diff --git a/lib/client.js b/lib/client.js
index 3ab2aff..1902af0 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -283,6 +283,7 @@ function isOriginValid (origin) {
       /^https:\/\/.+\.zd-dev\.com$/,
       /^https:\/\/.+\.zd-master\.com$/,
       /^https:\/\/.+\.zendesk-staging\.com$/,
+      /^https:\/\/.+\.zendesk-dev\.com$/,
       // Zendesk Chat domains:
       /^https?:\/\/.+\.zopim\.com(:\d+)?$/,
       /^https:\/\/dashboard\.zopim\.org$/,