diff --git a/docker/l2tp/Dockerfile b/docker/l2tp/Dockerfile
index b5fe34a..a3bb5de 100644
--- a/docker/l2tp/Dockerfile
+++ b/docker/l2tp/Dockerfile
@@ -4,7 +4,7 @@
 FROM alpine:edge
 LABEL maintainer="Teddysun <i@teddysun.com>"
 
-RUN apk add -U ca-certificates openssl libreswan xl2tpd \
+RUN apk add --no-cache ca-certificates bash openssl libreswan xl2tpd \
 	&& ipsec initnss \
 	&& rm -rf /var/cache/apk/*
 
diff --git a/docker/l2tp/Dockerfile.architecture b/docker/l2tp/Dockerfile.architecture
index 69ee6c3..109eff4 100644
--- a/docker/l2tp/Dockerfile.architecture
+++ b/docker/l2tp/Dockerfile.architecture
@@ -4,7 +4,7 @@
 FROM --platform=$TARGETPLATFORM alpine:edge
 LABEL maintainer="Teddysun <i@teddysun.com>"
 
-RUN apk add -U ca-certificates openssl libreswan xl2tpd \
+RUN apk add --no-cache ca-certificates bash openssl libreswan xl2tpd \
 	&& ipsec initnss \
 	&& rm -rf /var/cache/apk/*