diff --git a/CHANGES b/CHANGES
index 96f2433c4e9f6799f307aceafac44d3307fcbd8e..a675965cd2b9262c1b8e53fc71d9bb269fcfd7ac 100644
--- a/CHANGES
+++ b/CHANGES
@@ -66,6 +66,10 @@ o Image.TGA
   - Correctly update pointer when horizontal or vertical flipping is
     requested by the TGA image.
 
+o Image.TIFF
+
+  Improved size checks in image decoding
+
 o Image.TIM
 
   Improved size checks better detect malformed TIM images.