diff --git a/Library/Homebrew/utils/pypi.rb b/Library/Homebrew/utils/pypi.rb
index 9e214dd8ed..879efe8902 100644
--- a/Library/Homebrew/utils/pypi.rb
+++ b/Library/Homebrew/utils/pypi.rb
@@ -57,7 +57,7 @@ module PyPI
       else
         "https://pypi.org/pypi/#{@name}/json"
       end
-      out, _, status = curl_output metadata_url, "--location"
+      out, _, status = curl_output metadata_url, "--location", "--fail"
 
       return unless status.success?