diff --git a/latest.json b/latest.json
index 775d1f3f648..77013fc88ec 100644
--- a/latest.json
+++ b/latest.json
@@ -1,4 +1,4 @@
 {
   "stable": "6.5.3",
-  "testing": "6.5.3"
+  "testing": "6.6.0-beta1"
 }