diff --git a/Dockerfile b/Dockerfile
index 6916cabc06f61883fe6bd5a82206b2ff9c63cbb2..9a5e2b30d6d966ef977b0ce584c9a04b08ef5974 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,5 +3,7 @@ MAINTAINER Philipp C. Heckel <philipp.heckel@gmail.com>
 
 COPY ntfy /usr/bin
 
+RUN apk add --no-cache tzdata
+
 EXPOSE 80/tcp
 ENTRYPOINT ["ntfy"]
diff --git a/docker-compose.yml b/docker-compose.yml
index d4841bc0e39a70d78c33c3a7a6c3e107044c3a1c..d39492e88d603496af0cafe6cd9e5e61a2037170 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -5,7 +5,9 @@ services:
     container_name: ntfy
     command:
       - serve
-    user: UID:GID # optional. Set custom user/group or uid/gid
+    environment:
+      - TZ=UTC    # optional: Change to your desired timezone
+    user: UID:GID # optional: Set custom user/group or uid/gid
     volumes:
       - /var/cache/ntfy:/var/cache/ntfy
       - /etc/ntfy:/etc/ntfy
diff --git a/docs/install.md b/docs/install.md
index 6489d890b5c68698e03f77d0e67662da9e3540b1..092c9a4bac96479aaa99588727848e9bb73de3d7 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -239,10 +239,11 @@ docker run \
     serve
 ```
 
-With other config options and non-root user (configured via `/etc/ntfy/server.yml`, see [configuration](config.md) for details):
+With other config options, timezone, and non-root user (configured via `/etc/ntfy/server.yml`, see [configuration](config.md) for details):
 ```bash
 docker run \
   -v /etc/ntfy:/etc/ntfy \
+  -e TZ=UTC \
   -p 80:80 \
   -u UID:GID \
   -it \
@@ -260,7 +261,9 @@ services:
     container_name: ntfy
     command:
       - serve
-    user: UID:GID # optional. replace with your own user/group or uid/gid
+    environment:
+      - TZ=UTC    # optional: set desired timezone
+    user: UID:GID # optional: replace with your own user/group or uid/gid
     volumes:
       - /var/cache/ntfy:/var/cache/ntfy
       - /etc/ntfy:/etc/ntfy