diff --git a/README.md b/README.md
index 9f654d9d..afb077f2 100644
--- a/README.md
+++ b/README.md
@@ -13,13 +13,8 @@ I don't use home manager the program, everything is referenced from the top flak
 ## infra setup
 
 ```mermaid
-sequenceDiagram
-Alice ->> Bob: Hello Bob, how are you?
-Bob-->>John: How about you John?
-Bob--x Alice: I am good thanks!
-Bob-x John: I am good thanks!
-Note right of John: Bob thinks a long<br/>long time, so long<br/>that the text does<br/>not fit on a row.
-
-Bob-->Alice: Checking with John...
-Alice->John: Yes... John, how are you?
+graph TB
+    mb1
+    vpsfree1
+    bolty
 ```
diff --git a/nixos/gui/vscode.nix b/nixos/gui/vscode.nix
index 036819f0..37c2a439 100644
--- a/nixos/gui/vscode.nix
+++ b/nixos/gui/vscode.nix
@@ -18,6 +18,12 @@
               buildInputs = with pkgs; [ llvm lldb python37 autoPatchelfHook ];
             })
           ] ++ vscode-utils.extensionsFromVscodeMarketplace [
+            {
+              publisher = "bierner";
+              name = "markdown-mermaid";
+              version = "1.18.1";
+              sha256 = "sha256-JWeSs7V/LZ345vGWOLeUgGi68Fot/eA2k+CzWL/Wp4w=";
+            }
             {
               publisher = "arrterian";
               name = "nix-env-selector";