diff --git a/README.md b/README.md
index 9cfac12e21..2606236355 100644
--- a/README.md
+++ b/README.md
@@ -93,7 +93,7 @@ recommended to have a look to the brief
 ### Introductory presentations
 
 -   Orion Context Broker
-    [(en)](https://www.slideshare.net/slideshows/orion-context-broker-introduction-20240227/266516824)
+    [(en)](https://www.slideshare.net/slideshow/orion-context-broker-introduction-20240604/269503234)
     [(jp)](https://www.slideshare.net/slideshows/orion-context-broker-introduction-20240227/266517846)
 -   NGSIv2 Overview for Developers That Already Know NGSIv1
     [(en)](https://www.slideshare.net/fermingalan/orion-context-broker-ngsiv2-overview-for-developers-that-already-know-ngsiv1-20220523)
diff --git a/doc/manuals.jp/devel/README.md b/doc/manuals.jp/devel/README.md
index 603da17228..bfbf13e1d1 100644
--- a/doc/manuals.jp/devel/README.md
+++ b/doc/manuals.jp/devel/README.md
@@ -1,6 +1,6 @@
 # <a name="top"></a>開発マニュアル
 
-*注 : このドキュメントでは、リリース 3.12.x の Orion Context Broker について説明しています。*
+*注 : このドキュメントでは、リリース 4.0.x の Orion Context Broker について説明しています。*
 
 ## 対象読者
 
diff --git a/doc/manuals/devel/README.md b/doc/manuals/devel/README.md
index 87fc4f4e02..dd6d690c79 100644
--- a/doc/manuals/devel/README.md
+++ b/doc/manuals/devel/README.md
@@ -1,6 +1,6 @@
 # <a name="top"></a>Development Manual
 
-*Note: This document describes Orion Context Broker as of release 3.12.x.*
+*Note: This document describes Orion Context Broker as of release 4.0.x.*
 
 ## Intended audience
 The intended audience of this manual is developers that need to understand the internals of the Orion Context Broker