diff --git a/Casks/sim-genie.rb b/Casks/sim-genie.rb
index c89798219b..cea3a2ab9b 100644
--- a/Casks/sim-genie.rb
+++ b/Casks/sim-genie.rb
@@ -8,5 +8,7 @@ cask "sim-genie" do
   name "Sim Genie"
   homepage "https://simgenie.app/"
 
+  depends_on macos: ">= :mojave"
+
   app "Sim Genie.app"
 end