diff --git a/CHANGES.md b/CHANGES.md
index 92fb7cfb9..6c04e650e 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -21,6 +21,7 @@ This file is a best-effort approach to solving this issue; we will do our best b
 * (applications) Added an `OnOffState` trace source to `OnOffApplication`, to track whether the application is transmitting or not.
 * (zigbee) Added Zigbee module support. The module includes a NWK layer with joining and routing capabilities. No APS layer included.
 * (antenna) Add `SymmetricAdjacencyMatrix` utility class, used to track the necessity of channel state between every `PhasedArrayModel` pair.
+* (wifi) Added a new **RobustAVStreamingSupported** attribute to `WifiMac` to enable 802.11aa features (GCR).
 
 ### Changes to existing API
 
@@ -33,6 +34,7 @@ This file is a best-effort approach to solving this issue; we will do our best b
 * (tap-bridge) Removed unused gateway option from tap-creator.
 * (wifi) Added a new **ProtectedIfResponded** attribute to `FrameExchangeManager` to disable RTS/CTS protection for stations that have already responded to a frame requiring acknowledgment in the same TXOP, even if such frame had not been protected by RTS/CTS. The default value is true, even though it represents a change with respect to the previous behavior, because it is likely a more realistic choice.
 * (wifi) Deprecated setters/getters of the {Ht,Vht,He}Configuration classes that trivially set/get member variables, which have been made public and hence accessible to users.
+* (wifi) Trace source `QosTxop::BaEstablished` is extended to support GCR block ack agreements.
 
 ### Changes to build system
 
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 702936280..e249ba0f9 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -48,6 +48,7 @@ The required Doxygen version for documentation generation is version 1.11.
 - (wifi) Add support for exchanging 802.11be Multi-Link Probe Request frames. Currently, the default association manager does not instruct the MAC to transmit a Multi-Link Probe Request frame, though.
 - (wifi) 2004! - Add Wi-Fi channel occupancy statistics helper
 - (wifi) 2009! - Added WifiTxStatsHelper for Wi-Fi MAC-level tracing.
+- (wifi) - Added support for 802.11aa groupcast with retries (GCR). Both unsolicited retries (GCR-UR) and Block Ack (GCR-BA) mechanisms are implemented.
 
 ### Bugs fixed