diff --git a/Dockerfile.synchronizer b/Dockerfile.synchronizer
index 2c0ae3a..fd58002 100644
--- a/Dockerfile.synchronizer
+++ b/Dockerfile.synchronizer
@@ -16,7 +16,7 @@
 
 # xosproject/volt-synchronizer
 
-FROM xosproject/xos-synchronizer-base:2.1.50
+FROM xosproject/xos-synchronizer-base:2.2.1
 
 COPY xos/synchronizer /opt/xos/synchronizers/volt
 COPY VERSION /opt/xos/synchronizers/volt/
diff --git a/xos/synchronizer/config.yaml b/xos/synchronizer/config.yaml
index 8a1a51e..f68dc8b 100644
--- a/xos/synchronizer/config.yaml
+++ b/xos/synchronizer/config.yaml
@@ -15,6 +15,7 @@
 
 
 name: volt
+core_version: ">=2.2.1"
 required_models:
   - VOLTService
   - VOLTServiceInstance