diff --git a/Casks/emacs-app-good.rb b/Casks/emacs-app-good.rb
index 803dd2eb..a3f43267 100644
--- a/Casks/emacs-app-good.rb
+++ b/Casks/emacs-app-good.rb
@@ -36,6 +36,7 @@ cask 'emacs-app-good' do
 
   depends_on macos: '>= :catalina'
   depends_on arch: :intel
+  depends_on formula: 'gcc'
 
   app 'Emacs.app'
   binary "#{appdir}/Emacs.app/Contents/MacOS/bin/ebrowse"
diff --git a/Casks/emacs-app-nightly.rb b/Casks/emacs-app-nightly.rb
index 0c719486..e63960d1 100644
--- a/Casks/emacs-app-nightly.rb
+++ b/Casks/emacs-app-nightly.rb
@@ -36,6 +36,7 @@ cask 'emacs-app-nightly' do
 
   depends_on macos: '>= :catalina'
   depends_on arch: :intel
+  depends_on formula: 'gcc'
 
   app 'Emacs.app'
   binary "#{appdir}/Emacs.app/Contents/MacOS/bin/ebrowse"
diff --git a/templates/emacs-app-good.rb.tpl b/templates/emacs-app-good.rb.tpl
index 18536690..a9717f2c 100644
--- a/templates/emacs-app-good.rb.tpl
+++ b/templates/emacs-app-good.rb.tpl
@@ -36,6 +36,7 @@ cask 'emacs-app-good' do
 
   depends_on macos: '>= :catalina'
   depends_on arch: :intel
+  depends_on formula: 'gcc'
 
   app 'Emacs.app'
   binary "#{appdir}/Emacs.app/Contents/MacOS/bin/ebrowse"
diff --git a/templates/emacs-app-nightly.rb.tpl b/templates/emacs-app-nightly.rb.tpl
index 7455fb9a..f59ffc2c 100644
--- a/templates/emacs-app-nightly.rb.tpl
+++ b/templates/emacs-app-nightly.rb.tpl
@@ -36,6 +36,7 @@ cask 'emacs-app-nightly' do
 
   depends_on macos: '>= :catalina'
   depends_on arch: :intel
+  depends_on formula: 'gcc'
 
   app 'Emacs.app'
   binary "#{appdir}/Emacs.app/Contents/MacOS/bin/ebrowse"