diff --git a/.gitignore b/.gitignore
index 353733a..71e66a9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -21,3 +21,6 @@ terraria/password.txt
 
 # wireguard
 wireguard/*.conf
+
+# backup
+data.zip
diff --git a/README.md b/README.md
index 6abfd85..b279a47 100644
--- a/README.md
+++ b/README.md
@@ -32,3 +32,7 @@ docker compose up -d # auto restarts on reboot!
 ```
 
 Note for first start you'll need to configure Gitea. You may also need to `chown` and `chmod` the mounted folders for each container.
+
+## backup
+
+Run `./backup` and save the resultant `data.zip` somewhere. I should probably automate this.
diff --git a/backup b/backup
new file mode 100755
index 0000000..d5b9599
--- /dev/null
+++ b/backup
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+zip -FS -r data.zip \
+    minecraft/world \
+    terraria/worlds \
+    terraria/password.txt \
+    website/gitea \
+    website/letsencrypt \
+    website/sendgrid.key