diff --git a/seafile-server/Dockerfile b/seafile-server/Dockerfile
index 00d7509..795aff9 100644
--- a/seafile-server/Dockerfile
+++ b/seafile-server/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13 AS get
+FROM alpine:3.14.0 AS get
 
 RUN apk add --no-cache wget
 
diff --git a/seahub-media/Dockerfile b/seahub-media/Dockerfile
index 8831b8a..9ed4f2d 100644
--- a/seahub-media/Dockerfile
+++ b/seahub-media/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13 AS get
+FROM alpine:3.14.0 AS get
 ENV SEAFILE_SERVER=seafile-server SEAFILE_VERSION=8.0.6
 
 RUN apk add --no-cache wget
diff --git a/seahub/Dockerfile b/seahub/Dockerfile
index ad80012..e3181bf 100644
--- a/seahub/Dockerfile
+++ b/seahub/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.13 AS get
+FROM alpine:3.14.0 AS get
 ENV SEAFILE_SERVER=seafile-server SEAFILE_VERSION=8.0.6
 
 RUN apk add --no-cache wget
@@ -12,7 +12,7 @@ RUN sed -i "s@.*INNER_FILE_SERVER_ROOT.*@INNER_FILE_SERVER_ROOT = os.environ.get
 
 RUN sed -i '/warning_if_seafile_not_running;/d' /tmp/seafile-server-${SEAFILE_VERSION}/seahub.sh
 
-FROM alpine:3.13 AS pip
+FROM alpine:3.14.0 AS pip
 
 RUN apk add --no-cache \
 python3-dev \
@@ -42,7 +42,7 @@ django-pylibmc \
 django-simple-captcha \
 && rm -r /root/.cache/pip
 
-FROM alpine:3.13
+FROM alpine:3.14.0
 
 RUN apk add --no-cache \
 bash \