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 @@
# 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 @@
# 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