diff --git a/README.md b/README.md
index 7d3af293..b5a7ca62 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,9 @@ Our [documentation pages](https://marked.js.org) are also rendered using marked
 
 **In-browser:** `npm install marked --save`
 
-## Usage 
+## Usage
+
+### Warning: 🚨 Marked does not sanitize the output HTML by default 🚨
 
 **CLI**
 
@@ -64,4 +66,3 @@ $ cat hello.html
 ## License
 
 Copyright (c) 2011-2018, Christopher Jeffrey. (MIT License)
-
diff --git a/docs/README.md b/docs/README.md
index 6df149b8..f4de16bd 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -39,6 +39,8 @@ These documentation pages are also rendered using marked 💯
 
 <h2 id="usage">Usage</h2>
 
+### Warning: 🚨 Marked does not sanitize the output HTML by default 🚨
+
 **CLI**
 
 ``` bash