diff --git a/CHANGES.md b/CHANGES.md
index de66c704b..39f0f52cd 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -22,6 +22,7 @@ Changes from ns-3.37 to ns-3.38
 * (wifi) Added a new attribute **NMaxInflights** to QosTxop to set the maximum number of links on which an MPDU can be simultaneously in-flight.
 * (core) Added several macros in **warnings.h** to silence compiler warnings in specific sections of code. Their use is discouraged, unless really necessary.
 * (internet-apps) Add class `Ping` for a ping model that works for both IPv4 and IPv6.
+* In `src/spectrum`, a new fast-fading model `TwoRaySpectrumPropagationLossModel` has been added. This model serves as a performance-oriented alternative to the `ThreeGppSpectrumPropagationLossModel` and `ThreeGppChannelModel` classes, and it has been designed with the goal of providing end-to-end channel samples which are statistically close to the ones generated by the latter.
 
 ### Changes to existing API
 
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 1f4ecef9c..15db7fffd 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -26,6 +26,7 @@ Release 3-dev
 - (internet-apps) - A new Ping model that works for both IPv4 and IPv6 has been added, to replace the address family specific v4Ping and Ping6.
 - (lr-wpan) !1268 - Adding beacon payload now its possible using MLME-SET.request primitive.
 - (core) !1302 - Now test-runner exits if no TestSuite is specified.
+- (spectrum) !1046 - Addition of the TwoRaySpectrumPropagationLossModel fast-fading class, as the outcome of the related GSoC 2022 project titled "A simplified channel and beamforming model for ns-3"
 
 ### Bugs fixed