diff --git a/readme.md b/readme.md
index b17b077..f179832 100644
--- a/readme.md
+++ b/readme.md
@@ -30,9 +30,11 @@ Carbonyl originally started as [`html2svg`](https://github.com/fathyb/html2svg)
 ### Docker
 
 ```shell
-$ docker run --rm -ti fathyb/carbonyl https://youtube.com
+$ docker run --rm -ti -v "$HOME/.local/share/carbonyl-docker:/carbonyl/data" fathyb/carbonyl https://youtube.com
 ```
 
+This will persist data across runs at `"$HOME/.local/share/carbonyl-docker`.
+
 ### npm
 
 ```console