diff --git a/ChangeLog b/ChangeLog
index d46b9af465a9989c1493ce59c313e7fb65ba8f63..4ac741235aa3a98f2652dbaefea2191ba9472feb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -6,6 +6,8 @@ darshan-2.2.6-pre1
 =============
 * Bug fix: make sure to honor any user-specified hints passed in at runtime
   via the DARSHAN_LOGHINTS env variable.
+* Add instrumentation of startup time, enabled via DARSHAN_INTERNAL_TIMING
+  environment variable
 
 darshan-2.2.5
 =============