diff --git a/home/config/doom/config.el b/home/config/doom/config.el
index baa1148..fc6ee7d 100644
--- a/home/config/doom/config.el
+++ b/home/config/doom/config.el
@@ -274,6 +274,11 @@
         (css "https://github.com/tree-sitter/tree-sitter-css")
         (tsx "https://github.com/tree-sitter/tree-sitter-typescript" "master" "tsx/src")))
 
+(define-derived-mode astro-mode web-mode "astro")
+(setq auto-mode-alist
+      (append '(("\\.astro\\'" . astro-mode))
+              auto-mode-alist))
+
 (use-package! lsp-tailwindcss
   :defer t
   :init
diff --git a/home/config/doom/config.org b/home/config/doom/config.org
index 451ec5b..15fb41d 100644
--- a/home/config/doom/config.org
+++ b/home/config/doom/config.org
@@ -617,6 +617,16 @@ Because ~astro-ts-mode~ uses treesitter, treesitter needs to be set up to handle
         (css "https://github.com/tree-sitter/tree-sitter-css")
         (tsx "https://github.com/tree-sitter/tree-sitter-typescript" "master" "tsx/src")))
 #+end_src
+
+Define Astro as a derived mode for ~.astro~ files.
+
+#+begin_src elisp
+(define-derived-mode astro-mode web-mode "astro")
+(setq auto-mode-alist
+      (append '(("\\.astro\\'" . astro-mode))
+              auto-mode-alist))
+#+end_src
+
 **** Tailwind
 Add the tailwind lsp package
 #+begin_src elisp :tangle packages.el
diff --git a/home/default.nix b/home/default.nix
index 4448029..f9b65c8 100644
--- a/home/default.nix
+++ b/home/default.nix
@@ -28,6 +28,8 @@ with mylib;
     # bat is a better cat (as a program, at least)
     bat
 
+    mob
+
     htop
 
     pandoc