diff --git a/changelog.md b/changelog.md
index c87b099f9..bc66b3f0c 100644
--- a/changelog.md
+++ b/changelog.md
@@ -3,6 +3,7 @@
 * Don't switch to quoted-printable for long lines if already using base64
 * Fixed Travis-CI config when run on PHP 7
 * Add address parser for RFC822-format addresses
+* Update MS Office MIME types
 
 ## Version 5.2.10 (May 4th 2015)
 * Add custom header getter