diff --git a/.docker/build b/.docker/build
index bd15c29..8c34728 100755
--- a/.docker/build
+++ b/.docker/build
@@ -5,7 +5,7 @@ set -e
 
 build_squid2radius_dependency(){
     apk add python3 py-pip ca-certificates openssl
-    pip install pyrad==2.1 hurry.filesize==0.9
+    pip install pyrad==2.1 --break-system-packages
 }
 
 apk update
diff --git a/Dockerfile b/Dockerfile
index 24a224f..7fe1f7b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
-FROM smartentry/alpine:3.18
+FROM smartentry/alpine:3.20
 
-MAINTAINER Yifan Gao <docker@yfgao.com>
+LABEL maintainer="Yifan Gao <docker@yfgao.com>"
 
 COPY .docker $ASSETS_DIR
 HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 CMD /opt/healthcheck.sh