diff --git a/CHANGES.md b/CHANGES.md
index 77f624a..6ec0f5e 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -4,6 +4,10 @@ If you are updating from a previous version, pay particular attention to the cha
 
 ## 4.xx
 
+### 4.05
+
+Add slope grade in speed widget
+
 ### 4.04
 
 Smooth speed (average on SAMPLE's values)
diff --git a/README.md b/README.md
index dc12d28..72df38b 100644
--- a/README.md
+++ b/README.md
@@ -97,6 +97,8 @@ As of V2.03, **GPMFMetersGenerator** detects by itself the presence of additionn
 
 Can be based on GPS' 2D or 3D speed figure ... or even both (*mostly for testing purpose*)
 
+As of **v4.05**, slope grade has been added.
+
 ### Speed tracker
 
 ![Speed tracker](Images/Strk.png)