diff --git a/Dockerfile b/Dockerfile
index 5e96ce6..2ec0286 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,7 @@ WORKDIR /var/www/html
 RUN mv /etc/apt/sources.list /etc/apt/sources.list.bak
 RUN echo 'deb http://mirrors.aliyun.com/debian buster main' >> /etc/apt/sources.list
 RUN echo 'deb http://mirrors.aliyun.com/debian buster-updates main' >> /etc/apt/sources.list
-RUN apt-get update && apt-get install -y zip cron vim zlib1g-dev libpng-dev
+RUN apt-get update && apt-get install -y --allow-downgrades zip cron vim zlib1g=1:1.2.11.dfsg-1 zlib1g-dev libpng-dev
 RUN rm -rf /var/lib/apt/lists/* && apt-get clean
 
 # 安装 PHP 扩展
diff --git a/version b/version
index 94fe62c..9075be4 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-1.5.4
+1.5.5