diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 4a7d171..5b7d54e 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -7,6 +7,9 @@
     "customizations": {
         "vscode": {
             "extensions": [
+                "pomdtr.excalidraw-editor",
+                "bierner.markdown-mermaid",
+                "ritwickdey.liveserver"
             ]
         }
     }