diff --git a/CHANGELOG.md b/CHANGELOG.md
index 746c1ee..77e87a0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 # v13.1.0
 
 - Allow setting `SocketEngineSpec.extraHeaders` after init.
+- Deprecate `SocketEngineSpec.websocket` in favor of just using the `SocketEngineSpec.polling` property.
 
 # v13.0.1