diff --git a/Casks/gtkwave.rb b/Casks/gtkwave.rb
index c6f7adadc95..ba040bbfbaa 100644
--- a/Casks/gtkwave.rb
+++ b/Casks/gtkwave.rb
@@ -1,23 +1,23 @@
-cask 'gtkwave' do
-  version '3.3.103'
-  sha256 '53156f87b6cb644b9b658c1c8b50a92ec88c27dee0c21a4d427f619bdbe1b835'
+cask "gtkwave" do
+  version "3.3.103"
+  sha256 "53156f87b6cb644b9b658c1c8b50a92ec88c27dee0c21a4d427f619bdbe1b835"
 
   # downloads.sourceforge.net/gtkwave/ was verified as official when first introduced to the cask
   url "https://downloads.sourceforge.net/gtkwave/gtkwave-#{version}-osx-app/gtkwave.zip"
-  appcast 'https://sourceforge.net/projects/gtkwave/rss'
-  name 'GTKWave'
-  homepage 'https://gtkwave.sourceforge.io/'
+  appcast "https://sourceforge.net/projects/gtkwave/rss"
+  name "GTKWave"
+  homepage "https://gtkwave.sourceforge.io/"
 
   depends_on x11: true
 
-  app 'gtkwave.app'
-  binary "#{appdir}/gtkwave.app/Contents/Resources/bin/gtkwave_bin_launcher.sh", target: 'gtkwave'
+  app "gtkwave.app"
+  binary "#{appdir}/gtkwave.app/Contents/Resources/bin/gtkwave_bin_launcher.sh", target: "gtkwave"
 
   zap trash: [
-               '~/Library/Application Support/CrashReporter/gtkwave-bin_*.plist',
-               '~/Library/Preferences/com.geda.gtkwave.plist',
-               '~/Library/Saved Application State/com.geda.gtkwave.savedState',
-             ]
+    "~/Library/Application Support/CrashReporter/gtkwave-bin_*.plist",
+    "~/Library/Preferences/com.geda.gtkwave.plist",
+    "~/Library/Saved Application State/com.geda.gtkwave.savedState",
+  ]
 
   caveats <<~EOS
     You may need to install Perl’s Switch module to run #{token}’s command line tool.