diff --git a/docs/EXPERIMENTAL.md b/docs/EXPERIMENTAL.md
index 42b6e2142b..bf359da223 100644
--- a/docs/EXPERIMENTAL.md
+++ b/docs/EXPERIMENTAL.md
@@ -22,3 +22,4 @@ Experimental support in curl means:
  - HTTP/3 support and options
  - `CURLSSLOPT_NATIVE_CA` (No configure option, feature built in when supported)
  - The rustls backend
+- WebSockets