diff --git a/CHANGELOG.md b/CHANGELOG.md
index d52edb3..86b5677 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## master
 
+* Fallback if RENAME_EXCHANGE is not supportd by the filesystem
+* Assume POSIX compatibility if `sys.platform` is not `win32`
+* Assume `F_FULLFSYNC` always exists if `sys.platform` is `darwin`
+
 ## 3.1.3
 
 * Redirect '…/.well-known/caldav' and '…/.well-known/carddav' to base prefix