diff --git a/CHANGELOG.md b/CHANGELOG.md
index e448d2e46..28a256d4e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,8 @@ at anytime.
   * 
   
 ### Changed
+  * check headers file integrity on startup, removing/truncating the file to force re-download when necessary
+  * support partial headers file download from S3
   * changed txrequests for treq
   * changed cryptography version to 2.2.2
   * removed pycrypto dependency, replacing all calls to cryptography