diff --git a/Jenkinsfile b/Jenkinsfile
index 404c6dd..6284d67 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -127,7 +127,7 @@ docker run --rm \
   -e B2_APPLICATION_KEY \
   -e B2_APPLICATION_KEY_ID \
   backblazeit/b2:latest \
-  b2v4 sync /workspace/html/ "b2://${B2_BUCKET_NAME}/"
+  b2v4 sync --compare-versions size /workspace/html/ "b2://${B2_BUCKET_NAME}/"
                         '''
                     }
                 }