diff --git a/home/alex/programs/emacs/doom/config.el b/home/alex/programs/emacs/doom/config.el
index 66ec205..e3732c9 100644
--- a/home/alex/programs/emacs/doom/config.el
+++ b/home/alex/programs/emacs/doom/config.el
@@ -228,6 +228,12 @@
   :config
   (setq nov-save-place-file (concat doom-cache-dir "nov-places")))
 
+(use-package! protobuf-mode
+  :mode ("\\.proto\\'" . protobuf-mode))
+
+(use-package! systemd
+  :mode ("\\.\\(service\\|target\\|socket\\|timer\\)\\'" . systemd-mode))
+
 (use-package! org-present
   :after org)
 
diff --git a/home/alex/programs/emacs/doom/packages.el b/home/alex/programs/emacs/doom/packages.el
index 153917b..0cac093 100644
--- a/home/alex/programs/emacs/doom/packages.el
+++ b/home/alex/programs/emacs/doom/packages.el
@@ -72,3 +72,5 @@
 (package! activities
   :recipe (:host github :repo "alphapapa/activities.el" :branch "master"))
 (package! elfeed-web)
+(package! systemd)
+(package! protobuf-mode)