diff --git a/CHANGELOG.md b/CHANGELOG.md
index 92419fae..3f378127 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
   </summary>
 
   * fix large files failing to load ([@tech4him1](https://github.com/tech4him1) in [#1224](https://github.com/netlify/netlify-cms/pull/1224))
+  * prevent overwriting when generated slug matches an existing file ([@brianlmacdonald](https://github.com/brianlmacdonald) in [#1239](https://github.com/netlify/netlify-cms/pull/1239))
 </details>
 
 ## 1.8.0 (May 16, 2018)