diff --git a/Dockerfile b/Dockerfile
index 69a49fb..ed4a76d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,6 +4,7 @@ ENV NETDATA_PORT 19999
 EXPOSE $NETDATA_PORT
 
 VOLUME /override
+VOLUME /var/lib/netdata
 
 ENTRYPOINT ["/src/run.sh"]
 
diff --git a/README.md b/README.md
index 704c91d..3316f55 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,8 @@ docker run -d --cap-add SYS_PTRACE \
            -p 19999:19999 quay.io/luzifer/netdata
 ```
 
+To persist health check data and machine GUID you need to mount a persistent volume to `/var/lib/netdata`.
+
 ## Configuration
 
 To configure alerts have a look at the [`health_alarm_notify.conf` template](templates/health_alarm_notify.conf). There you can see all variable names you need to specify as environment variables.