diff --git a/.chezmoiexternals/grub.toml b/.chezmoiexternals/grub.toml
new file mode 100644
index 0000000..9c1c58e
--- /dev/null
+++ b/.chezmoiexternals/grub.toml
@@ -0,0 +1,4 @@
+[".themes/grub/catppuccin"]
+type = "git-repo"
+url = "https://github.com/catppuccin/grub.git"
+refreshPeriod = "672h"
diff --git a/.chezmoiscripts/run_after_update-grub-theme.fish b/.chezmoiscripts/run_after_update-grub-theme.fish
new file mode 100644
index 0000000..99347bc
--- /dev/null
+++ b/.chezmoiscripts/run_after_update-grub-theme.fish
@@ -0,0 +1,3 @@
+#!/usr/bin/env fish
+
+sudo cp -r ~/.themes/grub/catppuccin/src/* /usr/share/grub/themes/