diff --git a/Library/Homebrew/utils/analytics.rb b/Library/Homebrew/utils/analytics.rb
index c1d8f85a5c..15ac575751 100644
--- a/Library/Homebrew/utils/analytics.rb
+++ b/Library/Homebrew/utils/analytics.rb
@@ -223,6 +223,7 @@ options: options)
         return unless formula.core_formula?
 
         escaped_formula_name = GitHubPackages.image_formula_name(formula.name)
+                                             .gsub("/", "%2F")
         formula_url_suffix = "container/core%2F#{escaped_formula_name}/"
         formula_url = "https://github.com/Homebrew/homebrew-core/pkgs/#{formula_url_suffix}"
         output = Utils::Curl.curl_output("--fail", formula_url)