diff --git a/ChangeLog b/ChangeLog
index 891b44a..31b189e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,9 @@
 Version 2.3.1
   - exit with non-zero code if connection fails
   - man pages (Kent Baxley)
+  - read credentials from environment
+    wsman: WSMAN_USER, WSMAN_PASS, WSMAN_EVENT_USER, WSMAN_EVENT_PASS
+    wseventmgr: WSEVENTMGR_USER, WSEVENTMGR_PASS, WSEVENTMGR_EVENT_USER, WSEVENTMGR_EVENT_PASS
 
 Version 2.3.0
   - don't crash on filter parse error (Zoltan Micskei)