diff --git a/Casks/i/ia-markdown-dictionary.rb b/Casks/i/ia-markdown-dictionary.rb
new file mode 100644
index 0000000000..ae8d548355
--- /dev/null
+++ b/Casks/i/ia-markdown-dictionary.rb
@@ -0,0 +1,16 @@
+cask "ia-markdown-dictionary" do
+  version "1.0"
+  sha256 "d1cddfd0f0e727e8a21e693759a105ead75a1341c8e3d024a370248021565a38"
+
+  url "https://files.ia.net/tips/iA-Markdown-#{version}.dictionary.zip"
+  name "iA Markdown Dictionary"
+  desc "Markdown Dictionary for Dictionary.app"
+  homepage "https://ia.net/topics/ia-markdown-dictionary"
+
+  livecheck do
+    url :url
+    strategy :extract_plist
+  end
+
+  dictionary "iA Markdown.dictionary"
+end