diff --git a/Casks/c/cncjs.rb b/Casks/c/cncjs.rb
index 6825c68ab407..36f1ed2bae4a 100644
--- a/Casks/c/cncjs.rb
+++ b/Casks/c/cncjs.rb
@@ -19,4 +19,11 @@
   depends_on macos: ">= :high_sierra"
 
   app "CNCjs.app"
+
+  zap trash: [
+    "~/.cncjs-sessions",
+    "~/Library/Application Support/CNCjs",
+    "~/Library/Preferences/org.cncjs.plist",
+    "~/Library/Saved Application State/org.cncjs.savedState",
+  ]
 end