diff --git a/CHANGES.rst b/CHANGES.rst
index 04484a0..e9802e8 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,6 +1,11 @@
 Changelog
 =========
 
+3.3.1
+-----
+
+- Fix handling of command-line option ``splinter_headless`` (mpasternak)
+
 3.3.0
 -----