diff --git a/CHANGES.md b/CHANGES.md
index 0fdd75d24..ecb3870e1 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -41,6 +41,7 @@ Applications have a new Attribute to set the IPv4 ToS field.
 * (lr-wpan) The Lr-wpan module now uses the namespace `lrwpan`.
 * (lr-wpan) The `LrWpan` prefix of variables, structs and enumerations in the PHY and MAC was shorten to reflect the recent namespace change.
 * (wifi) Obsoleted **Txop** attributes `MinCw`, `MaxCw`, `Aifsn` and `TxopLimit`. The corresponding attributes for multi-link devices (`MinCws`, `MaxCws`, `Aifsns` and `TxopLimits`) can be used instead.
+* (energy) The energy module and all its contents now uses the namespace `energy`.
 
 ### Changes to build system
 
diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index c1549b1f3..eb0902a3f 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -35,6 +35,7 @@ been tested on Linux. The latest known version to work with ns-3 is cppyy==3.1.2
 - (wifi) - The `WifiMacHelper` provides a `SetChannelAccessManager` and a `SetFrameExchangeManager` methods to configure attributes of `ChannelAccessManager` and `FrameExchangeManager` objects, respectively
 - (wifi) - Simulation duration and data rate parameters of existing wifi examples changed to use Time and DataRate types
 - (mobility) !1986 - Adds simple constant-mobility-example
+- (energy) !1948 - Adds namespace energy
 
 ### Bugs fixed