diff --git a/CHANGELOG.md b/CHANGELOG.md
index f17cfedae2..3d39af0a07 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
  - Switched MSR accesses to deny by default policy.
  - Intel Processor Trace support (Tech Preview)
  - Named PCI devices for xl/libxl
+ - Improved documentation for xl PCI configuration format
  - Support for zstd-compressed dom0 (x86) and domU kernels
  - Library improvements from NetBSD ports upstreamed
  - CI loop: Add Alpine Linux, Ubuntu Focal targets; drop CentOS 6
@@ -21,7 +22,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
  - x86: Allow domains to use AVX-VNNI instructions
  - Factored out HVM-specific shadow code, improving code clarity and reducing the size of PV-only hypervisor builds
  - Added XEN_SCRIPT_DIR configuration option to specify location for Xen scripts, rather than hard-coding /etc/xen/scripts
-
+ - xennet: Documented a way for the backend (or toolstack) to specify MTU to the frontend
 
 ### Removed / support downgraded