diff --git a/Library/Homebrew/cask/audit.rb b/Library/Homebrew/cask/audit.rb
index b8323cb749..957c40609b 100644
--- a/Library/Homebrew/cask/audit.rb
+++ b/Library/Homebrew/cask/audit.rb
@@ -304,7 +304,8 @@ module Cask
       return if cask.appcast.configuration == :no_check
 
       appcast_stanza = cask.appcast.to_s
-      appcast_contents, = curl_output("--compressed", "--location", "--max-time", "5", appcast_stanza)
+      appcast_contents, = curl_output("--compressed", "--user-agent", HOMEBREW_USER_AGENT_FAKE_SAFARI, "--location",
+                                      "--max-time", "5", appcast_stanza)
       version_stanza = cask.version.to_s
       if cask.appcast.configuration.blank?
         adjusted_version_stanza = version_stanza.split(",")[0].split("-")[0].split("_")[0]