diff --git a/CHANGELOG.md b/CHANGELOG.md
index ef81ceb507..705fdc1187 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@ We’ve updated the documentation for Copilot repository custom instructions to
 
 See: [Adding repository custom instructions for GitHub Copilot](https://docs.github.com/en/copilot/how-tos/configure-custom-instructions/add-repository-instructions?tool=eclipse) and [About customizing GitHub Copilot Chat responses](https://docs.github.com/en/copilot/concepts/response-customization?tool=eclipse).
 
+<hr>
+
+**12 August 2025**
+
 We have added a tutorial for using Copilot to create Mermaid diagrams at [Creating Diagrams](https://docs.github.com/en/copilot/tutorials/copilot-chat-cookbook/communicate-effectively/creating-diagrams).
 
 <hr>