diff --git a/README.md b/README.md
index 0ba2058..eb418fe 100644
--- a/README.md
+++ b/README.md
@@ -31,3 +31,41 @@ npm install
 npm run build
 npm start
 ```
+
+### Environment variables
+
+#### `CACHE_DIR`
+
+Optional. Directory for persistent caches using SQLite files. Default: OS tmp dir.
+
+#### `CONFIGURATION_DESCRIPTION`
+
+Optional. To customize the description shown on the configuration page.
+
+#### `DISABLED_EXTRACTORS`
+
+Optional. Comma separated list of extractors which should be disabled. E.g. `doodstream,vidsrc`
+
+#### `DISABLED_SOURCES`
+
+Optional. Comma separated list of sources which should be disabled. E.g. `frembed,vidsrc`
+
+#### `MANIFEST_ID`
+
+Optional. Add-on manifest ID. Default: `webstreamr`
+
+#### `MANIFEST_NAME`
+
+Optional. Add-on manifest name. Default: `WebStreamr`
+
+#### `PORT`
+
+Optional. Port of the node web server. Default: `51546`
+
+#### `PROXY_CONFIG`
+
+Optional. Proxies which should be used based on domain. Supports minimatch. E.g. `dood.to:http://USERNAME:PASSWORD@IP:PORT,*:socks5://172.17.0.1:1080` would use an http proxy for dood.to and a socks5 proxy for all other domains.
+
+#### `TMDB_ACCESS_TOKEN`
+
+**Required**. TMDB access token to get information like title and year for content. Use the [API Read Access Token](https://www.themoviedb.org/settings/api).