diff --git a/images/docker-bookstack.md b/images/docker-bookstack.md
index 9b0321356..01a808d33 100644
--- a/images/docker-bookstack.md
+++ b/images/docker-bookstack.md
@@ -111,6 +111,7 @@ docker run -d \
   --name=bookstack \
   -e PUID=1000 \
   -e PGID=1000 \
+  -e TZ=Europe/London \
   -e APP_URL= \
   -e DB_HOST=<yourdbhost> \
   -e DB_PORT=<yourdbport> \
@@ -139,6 +140,7 @@ Docker images are configured using parameters passed at runtime (such as those a
 | :----: | --- |
 | `PUID=1000` | for UserID - see below for explanation |
 | `PGID=1000` | for GroupID - see below for explanation |
+| `TZ=Europe/London` | Specify a timezone to use EG Europe/London |
 | `APP_URL=` | for specifying the IP:port or URL your application will be accessed on (ie. `http://192.168.1.1:6875` or `https://bookstack.mydomain.com` |
 | `DB_HOST=<yourdbhost>` | for specifying the database host |
 | `DB_PORT=<yourdbport>` | for specifying the database port if not default 3306 |