diff --git a/xos/synchronizer/Dockerfile.synchronizer b/xos/synchronizer/Dockerfile.synchronizer
index 44075f0..d4536d7 100644
--- a/xos/synchronizer/Dockerfile.synchronizer
+++ b/xos/synchronizer/Dockerfile.synchronizer
@@ -14,6 +14,8 @@
 # limitations under the License.
 
 
+# This Dockerfile is DEPRECATED and will be removed imminently.
+
 # xosproject/exampleservice-synchronizer
 
 FROM xosproject/xos-synchronizer-base:candidate