diff --git a/lib/tasks/stt-task.js b/lib/tasks/stt-task.js
index 29c96947..8ce2d80b 100644
--- a/lib/tasks/stt-task.js
+++ b/lib/tasks/stt-task.js
@@ -92,7 +92,7 @@ class SttTask extends Task {
       const {accessKeyId, secretAccessKey, region } = credentials;
       const { servedFromCache, ...newCredentials} = await getAwsAuthToken(accessKeyId, secretAccessKey, region);
       this.logger.debug({newCredentials}, `got aws security token ${servedFromCache ? 'from cache' : ''}`);
-      credentials = newCredentials;
+      credentials = {...newCredentials, region};
     }
     return credentials;
   }