diff --git a/pkgs/applications/editors/vscode/extensions/default.nix b/pkgs/applications/editors/vscode/extensions/default.nix
index 36fcb1c0decf..bf946b9aff3b 100644
--- a/pkgs/applications/editors/vscode/extensions/default.nix
+++ b/pkgs/applications/editors/vscode/extensions/default.nix
@@ -1089,6 +1089,23 @@ let
         meta = { license = lib.licenses.mit; };
       };
 
+      dhedgecock.radical-vscode = buildVscodeMarketplaceExtension {
+        mktplcRef = {
+          name = "radical-vscode";
+          publisher = "dhedgecock";
+          version = "3.3.1";
+          sha256 = "sha256-VvFQovuE+I0lqXU9fHrmk7nWMpuuWafqm9Acwb0+QYg=";
+        };
+        meta = {
+          changelog = "https://marketplace.visualstudio.com/items/dhedgecock.radical-vscode/changelog";
+          description = "A dark theme for radical hacking inspired by retro futuristic design";
+          downloadPage = "https://marketplace.visualstudio.com/items?itemName=dhedgecock.radical-vscode";
+          homepage = "https://github.com/dhedgecock/radical-vscode";
+          license = lib.licenses.isc;
+          maintainers = [ lib.maintainers.d3vil0p3r ];
+        };
+      };
+
       disneystreaming.smithy = buildVscodeMarketplaceExtension {
         mktplcRef = {
           publisher = "disneystreaming";