diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8514c2abd..3aa74496c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ FEATURES:
 
 * Vagrant post-processor can now make DigitalOcean provider boxes. [GH-504]
 
+IMPROVEMENTS:
+
+* builder/amazon/all: Can now specify a list of multiple security group
+  IDs to apply. [GH-499]
+
 ## 0.3.11 (November 4, 2013)
 
 FEATURES: