diff --git a/Dockerfile.synchronizer b/Dockerfile.synchronizer
index 5913671..07c9186 100644
--- a/Dockerfile.synchronizer
+++ b/Dockerfile.synchronizer
@@ -16,8 +16,7 @@
 # docker build -t xosproject/rcord-synchronizer:candidate -f Dockerfile.synchronizer .
 
 # xosproject/rcord-synchronizer
-FROM xosproject/xos-synchronizer-base:2.1.50
-
+FROM xosproject/xos-synchronizer-base:2.2.1
 COPY xos/synchronizer /opt/xos/synchronizers/rcord
 COPY VERSION /opt/xos/synchronizers/rcord/
 
diff --git a/xos/synchronizer/config.yaml b/xos/synchronizer/config.yaml
index 60f9116..c7c4ca0 100644
--- a/xos/synchronizer/config.yaml
+++ b/xos/synchronizer/config.yaml
@@ -15,6 +15,7 @@
 
 
 name: rcord
+core_version: ">=2.2.1"
 required_models:
   - RCORDService
   - RCORDSubscriber