diff --git a/devenv.nix b/devenv.nix
index 3e8b41e..c516b3a 100644
--- a/devenv.nix
+++ b/devenv.nix
@@ -15,6 +15,9 @@
       packages = {
         composer = pkgs.phpPackages.composer;
       };
+      extensions = [
+        "xdebug"
+      ];
     };
   };
 }