diff --git a/.vscode/extensions.json b/.vscode/extensions.json
index c2b792c..cc6e1f0 100644
--- a/.vscode/extensions.json
+++ b/.vscode/extensions.json
@@ -2,6 +2,7 @@
   "recommendations": [
     "jnoortheen.nix-ide",
     "detachhead.basedpyright",
-    "mkhl.direnv"
+    "mkhl.direnv",
+    "mermaidchart.vscode-mermaid-chart"
   ]
 }