diff --git a/Dockerfile b/Dockerfile
index 619c6b8..917d4fb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
-FROM ruby:2.6-alpine
+FROM ruby:2.7-alpine
 LABEL maintainer="icyleaf <icyleaf.cn@gmail.com>"
 
-ENV S6_OVERLAY_VERSION=1.22.1.0
+ENV S6_OVERLAY_VERSION=2.1.0.2
 
 RUN set -ex && \
     apk add --update --no-cache curl && \