diff --git a/.config/fish/functions/cask.fish b/.config/fish/functions/cask.fish
new file mode 100755
index 0000000..7cbff77
--- /dev/null
+++ b/.config/fish/functions/cask.fish
@@ -0,0 +1,4 @@
+function cask -d "Install a new homebrew cask and update the global Brewfile"
+  echo "cask \"$argv\"" >> ~/.Brewfile
+  brew bundle --global
+end