diff --git a/lib/review-apps.js b/lib/review-apps.js
index f01aa07..1a5f003 100644
--- a/lib/review-apps.js
+++ b/lib/review-apps.js
@@ -12,7 +12,7 @@ const DEFAULT_HEADERS = {
 
 const CONFLICT_STATUS_CODE = 409;
 const GET_REVIEW_APP_NAME_NUM_RETRIES = 1;
-const NUM_RETRIES = 60;
+const NUM_RETRIES = process.env.HEROKU_REVIEW_APP_NUM_RETRIES || 60;
 const RETRY_EXP_BACK_OFF_FACTOR = 1;
 const MIN_TIMEOUT = 10 * 1000;
 const REVIEW_APP_STATUSES = {