diff --git a/app/Dockerfile b/app/Dockerfile
index af4f253..a3d3a45 100644
--- a/app/Dockerfile
+++ b/app/Dockerfile
@@ -5,7 +5,7 @@ LABEL maintainer="JJTC <oci@jjtc.eu>"
 ENV PPM_VERSION=2.2.0 \
     PPM_HTTP_VERSION=2.0.6 \
     BOOKSTACK=BookStack \
-    BOOKSTACK_VERSION=0.30.0 \
+    BOOKSTACK_VERSION=0.31.0 \
     BOOKSTACK_HOME="/app"
 
 COPY entrypoint.sh /app/entrypoint.sh
@@ -50,7 +50,6 @@ RUN set -ex \
      php7-session \
      php7-simplexml \
      php7-sockets \
-     php7-tidy \
      php7-tokenizer \
      php7-xml \
      php7-xmlwriter \
diff --git a/docker-compose.yml b/docker-compose.yml
index 5b08fd5..0197d38 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -25,7 +25,7 @@ services:
       - backend
 
   app:
-    image: jjtc/bookstack-ppm:0.30.0-r0
+    image: jjtc/bookstack-ppm:0.31.0-r0
     build: ./app/
     restart: unless-stopped
     depends_on: