diff --git a/content/en/admin/config.md b/content/en/admin/config.md
index 9ae2ccec..0842d5e4 100644
--- a/content/en/admin/config.md
+++ b/content/en/admin/config.md
@@ -862,6 +862,10 @@ The bucket must support access control lists (ACLs). For AWS S3, this means sett
 
 #### `S3_ALIAS_HOST`
 
+#### `EXTRA_MEDIA_HOSTS`
+
+**Version history:**\
+4.4.0 - added
 
 #### `S3_OPEN_TIMEOUT`
 
diff --git a/content/en/admin/optional/object-storage-proxy.md b/content/en/admin/optional/object-storage-proxy.md
index 66ad68b6..748ad0d7 100644
--- a/content/en/admin/optional/object-storage-proxy.md
+++ b/content/en/admin/optional/object-storage-proxy.md
@@ -115,6 +115,12 @@ At last, you'll want to make sure Mastodon is using your new proxy to generate f
 S3_ALIAS_HOST=files.example.com
 ```
 
+(Optional) If your S3_ALIAS_HOST is using a 301 redirection or similar. Add the final location to the EXTRA_MEDIA_HOSTS
+
+```bash
+EXTRA_MEDIA_HOSTS=https://data.example1.com,https://data.example2.com
+```
+
 And restart Mastodon:
 
 ```bash
diff --git a/content/en/admin/optional/object-storage.md b/content/en/admin/optional/object-storage.md
index 7879873b..e27b6f42 100644
--- a/content/en/admin/optional/object-storage.md
+++ b/content/en/admin/optional/object-storage.md
@@ -101,6 +101,12 @@ provider, reducing egress bandwidth costs from the storage
 provider. This can be done in your own reverse proxy, or by using a
 CDN.
 
+`EXTRA_MEDIA_HOSTS` offers appending an additional list of hosts that
+are allowed to serve media for your instance. This is useful if you 
+include external media in your custom CSS or about page, or if your 
+data storage provider makes use of redirects to other domains.
+`EXTRA_MEDIA_HOSTS=https://data.example1.com,https://data.example2.com`
+
 {{< page-ref page="admin/optional/object-storage-proxy.md" >}}
 
 {{< hint style="info" >}}