diff --git a/seafile-server/Dockerfile b/seafile-server/Dockerfile
index 92245e3..0942197 100644
--- a/seafile-server/Dockerfile
+++ b/seafile-server/Dockerfile
@@ -9,7 +9,7 @@ RUN cd /tmp && \
     tar -zxvf seafile-server_${SEAFILE_VERSION}_x86-64.tar.gz && \
     rm -f seafile-server_${SEAFILE_VERSION}_x86-64.tar.gz
 
-FROM ubuntu:bionic-20210723
+FROM ubuntu:bionic-20210930
 
 RUN apt-get update && \
 DEBIAN_FRONTEND=noninteractive apt-get install -y \