diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ without modifying core components. The API is available via a simple REST API wh
 
 MISP modules support is included in MISP starting from version 2.4.28.
 
-For more information: [Extending MISP with Python modules](https://www.circl.lu/assets/files/misp-training/switch2016/2-misp-modules.pdf) slides from MISP training.
+For more information: [Extending MISP with Python modules](https://www.misp-project.org/misp-training/3.1-misp-modules.pdf) slides from MISP training.
 
 ## Existing MISP modules