diff --git a/Dockerfile b/Dockerfile
index f1fa165..569c2d6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,8 +3,10 @@ ADD ./ /app
 WORKDIR /app
 # 使用国内中科大镜像源加快apt速度
 COPY ./sources.list /etc/apt/sources.list
-RUN apt-get update && apt-get install -y locales locales-all ttf-wqy-microhei ffmpeg cron && \
-    bundle install
+RUN apt-get update && apt-get install -y locales locales-all ttf-wqy-microhei ffmpeg cron
+# 使用国内Gem镜像
+RUN gem sources --add https://gems.ruby-china.org/ --remove https://rubygems.org/
+RUN bundle install
 # 定时任务
 RUN crontab cron-sorry
 CMD cron && ruby src/sorry.rb