diff --git a/Casks/o/openthesaurus-deutsch.rb b/Casks/o/openthesaurus-deutsch.rb
new file mode 100644
index 0000000000..85c2a68855
--- /dev/null
+++ b/Casks/o/openthesaurus-deutsch.rb
@@ -0,0 +1,20 @@
+cask "openthesaurus-deutsch" do
+  version "2023.12.28"
+  sha256 :no_check
+
+  url "https://downloads.tekl.de/OpenThesaurus_Deutsch_dictionaryfile.zip"
+  name "OpenThesaurus Deutsch Dictionary plugin"
+  desc "Extends Apples Dictionary App with a German thesaurus"
+  homepage "https://tekl.de/lexikon-plug-ins/openthesaurus-deutsch-lexikon-plugin"
+
+  livecheck do
+    url :homepage
+    regex(%r{<em>\s*v(\d\d\d\d.\d\d.\d\d)\s*</em>}i)
+  end
+
+  depends_on macos: ">= :el_capitan"
+
+  dictionary "OpenThesaurus Deutsch.dictionary"
+
+  # No zap stanza required
+end