diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index 78d2b7d923..0edd2fe471 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -35,7 +35,7 @@ services:
       - ./learningedge-log4j.yaml:/home/equella/equella/learningedge-config/learningedge-log4j.yaml
 
   zookeeper:
-    image: zookeeper:3.9.0
+    image: zookeeper:3.9.1
     environment:
       ZOO_MY_ID: 1
       ZOO_SERVERS: server.1=0.0.0.0:2888:3888;2181