diff --git a/xos/synchronizer/Dockerfile.synchronizer b/xos/synchronizer/Dockerfile.synchronizer
index 3521ad3..a946ce0 100644
--- a/xos/synchronizer/Dockerfile.synchronizer
+++ b/xos/synchronizer/Dockerfile.synchronizer
@@ -1,4 +1,4 @@
-FROM xosproject/xos-synchronizer-base
+FROM xosproject/xos-synchronizer-base:candidate
 
 ADD . /opt/xos/synchronizers/vtr