diff --git a/Dockerfile b/Dockerfile
index 3eb0c01..5a138f9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@
 FROM node:12-slim
 MAINTAINER Glenn Y. Rolland <glenux@glenux.net>
 
-ENV ETHERPAD_VERSION 1.8.7
+ENV ETHERPAD_VERSION 1.8.13
 
 # RUN = docker run ... + docker commit 
 RUN apt-get update && \