diff --git a/Casks/librewolf.rb b/Casks/librewolf.rb
index 8f28310..677de52 100644
--- a/Casks/librewolf.rb
+++ b/Casks/librewolf.rb
@@ -13,6 +13,11 @@ cask "librewolf" do
     command_wrapper "librewolf",
                     executable: "#{appdir}/LibreWolf.app/Contents/MacOS/librewolf"
 
+    postflight do
+      system_command "/usr/bin/xattr",
+                     args: ["-dr", "com.apple.quarantine", "#{appdir}/LibreWolf.app"]
+    end
+
     zap trash: [
       "~/.librewolf",
       "~/Library/Application Support/LibreWolf",