diff --git a/Casks/w/wezterm@nightly.rb b/Casks/w/wezterm@nightly.rb
index a30328c780b2..75e8f7eab2cb 100644
--- a/Casks/w/wezterm@nightly.rb
+++ b/Casks/w/wezterm@nightly.rb
@@ -11,7 +11,6 @@
   conflicts_with cask: "wezterm"
 
   app "WezTerm.app"
-
   %w[
     wezterm
     wezterm-gui
@@ -21,6 +20,13 @@
     binary "#{appdir}/WezTerm.app/Contents/MacOS/#{tool}"
   end
 
+  binary "WezTerm.app/Contents/Resources/shell-completion/zsh",
+         target: "#{HOMEBREW_PREFIX}/share/zsh/site-functions/_wezterm"
+  binary "WezTerm.app/Contents/Resources/shell-completion/bash",
+         target: "#{HOMEBREW_PREFIX}/etc/bash_completion.d/wezterm"
+  binary "WezTerm.app/Contents/Resources/shell-completion/fish",
+         target: "#{HOMEBREW_PREFIX}/share/fish/vendor_completions.d/wezterm.fish"
+
   preflight do
     # Move "WezTerm-macos-#{version}/WezTerm.app" out of the subfolder
     staged_subfolder = staged_path.glob(["WezTerm-*", "wezterm-*"]).first