diff --git a/Casks/voltius.rb b/Casks/voltius.rb
index 557fb52..adf7850 100644
--- a/Casks/voltius.rb
+++ b/Casks/voltius.rb
@@ -28,8 +28,8 @@
     Right-click (or Control-click) Voltius in Applications and choose Open, then
     confirm. You only need to do this once.
 
-    To skip the warning entirely, install with:
-      brew install --cask --no-quarantine voltiusapp/voltius/voltius
+    To clear the quarantine flag from an existing installation instead, run:
+      xattr -dr com.apple.quarantine /Applications/Voltius.app
 
     Voltius updates itself in-app after installation.
   CAVEATS
diff --git a/README.md b/README.md
index 56c1636..eb25b9b 100644
--- a/README.md
+++ b/README.md
@@ -7,10 +7,11 @@ brew install --cask voltiusapp/voltius/voltius
 ```
 
 Voltius is not yet signed/notarized. If macOS Gatekeeper blocks the first launch,
-right-click the app and choose **Open**, or install with `--no-quarantine`:
+right-click the app and choose **Open**. To clear the quarantine flag from an
+existing installation instead, run:
 
 ```sh
-brew install --cask --no-quarantine voltiusapp/voltius/voltius
+xattr -dr com.apple.quarantine /Applications/Voltius.app
 ```
 
 The Cask is regenerated automatically on each Voltius release by CI in