diff --git a/README.md b/README.md
index 13589a6..c9d355d 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,11 @@ Optional. Comma separated list of extractors which should be disabled. E.g. `doo
 
 Optional. Comma separated list of sources which should be disabled. E.g. `frembed,vidsrc`
 
+#### `FLARESOLVERR_ENDPOINT`
+
+Optional. If domains show Cloudflare challenges, FlareSolverr can be used to work around them. E.g. `http://flaresolverr:8191`
+Proxy configuration is passed-through and only a single session is used to save resources. Byparr is not supported.
+
 #### `MANIFEST_ID`
 
 Optional. Add-on manifest ID. Default: `webstreamr`