diff --git a/docker-images.conf b/docker-images.conf
index 30909ae..44c219c 100755
--- a/docker-images.conf
+++ b/docker-images.conf
@@ -1,12 +1,12 @@
 #!/bin/bash
 export WTL_DOCKER_VERSION=2
 
 export WTL_DOCKER_HAPROXY="wikitolearn/haproxy:0.7"
 
 export WTL_DOCKER_MYSQL="mysql:5.7"
 export WTL_DOCKER_MEMCACHED="memcached:1.5"
 export WTL_DOCKER_OCG="wikitolearn/ocg:1.9.1"
-export WTL_DOCKER_WEBSRV="wikitolearn/websrv:0.20"
+export WTL_DOCKER_WEBSRV="wikitolearn/websrv:0.21"
 export WTL_DOCKER_PARSOID="wikitolearn/parsoid:0.6"
 export WTL_DOCKER_MATHOID="wikitolearn/mathoid:0.8"
 export WTL_DOCKER_RESTBASE="wikitolearn/restbase:0.6"