diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7fd3207bc..9846fe0c9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,9 @@ Updates should follow the [Keep a CHANGELOG](https://keepachangelog.com/) princi
 
 ## [Unreleased][unreleased]
 
+This is a **security release** to address potential denial of service attacks when parsing specially crafted,
+malicious input from untrusted sources (like user input).
+
 ### Added
 
 - Added `max_delimiters_per_line` config option to prevent denial of service attacks when parsing malicious input