diff --git a/README.md b/README.md
index c3a2834151..61f25363ff 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/slideshow/orion-context-broker-introduction-20240604/269503234)
+ [(en)](https://www.slideshare.net/slideshow/orion-context-broker-introduction-20240911/271735060)
[(jp)](https://www.slideshare.net/slideshow/orion-context-broker-introduction-20240605/269515246)
- 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 bfbf13e1d1..b1e9228816 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 4.0.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 4.1.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 dd6d690c79..3f7f9c0af0 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 4.0.x.*
+*Note: This document describes Orion Context Broker as of release 4.1.x.*
## Intended audience
The intended audience of this manual is developers that need to understand the internals of the Orion Context Broker