diff --git a/pkgs/misc/vscode-extensions/default.nix b/pkgs/misc/vscode-extensions/default.nix
index 619b1cbf22b4..3fcbcc286079 100644
--- a/pkgs/misc/vscode-extensions/default.nix
+++ b/pkgs/misc/vscode-extensions/default.nix
@@ -1603,6 +1603,18 @@ let
         };
       };
 
+      silvenon.mdx = buildVscodeMarketplaceExtension {
+        mktplcRef = {
+          name = "mdx";
+          publisher = "silvenon";
+          version = "0.1.0";
+          sha256 = "1mzsqgv0zdlj886kh1yx1zr966yc8hqwmiqrb1532xbmgyy6adz3";
+        };
+        meta = {
+          license = lib.licenses.mit;
+        };
+      };
+
       skyapps.fish-vscode = buildVscodeMarketplaceExtension {
         mktplcRef = {
           name = "fish-vscode";