diff --git a/Casks/dolphin-dev.rb b/Casks/dolphin-dev.rb
new file mode 100644
index 000000000..9f7bdc7b2
--- /dev/null
+++ b/Casks/dolphin-dev.rb
@@ -0,0 +1,14 @@
+cask 'dolphin-dev' do
+  version '5.0-5308'
+  sha256 'c482ff7d3da8f341550d6472cc06a1a237db887aef3afe0e87b47fd57e918fee'
+
+  url "https://dl.dolphin-emu.org/builds/dolphin-master-#{version}.dmg"
+  appcast 'https://github.com/dolphin-emu/dolphin/releases.atom',
+          checkpoint: 'c2e88f5174e911f4af1922d58ddb533154428d83333699a256c7aac0c1eb91d1'
+  name 'dolphin-dev'
+  homepage 'https://dolphin-emu.org/'
+
+  conflicts_with cask: 'dolphin'
+
+  app 'Dolphin.app'
+end