diff --git a/nixos/gui/vscode.nix b/nixos/gui/vscode.nix
index 63fe82d3..036819f0 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 = "arrterian";
+              name = "nix-env-selector";
+              version = "1.0.9";
+              sha256 = "sha256-TkxqWZ8X+PAonzeXQ+sI9WI+XlqUHll7YyM7N9uErk0=";
+            }
             {
               publisher = "vscodevim";
               name = "vim";