diff --git a/Gemfile b/Gemfile
index 01e7113..360916f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -20,7 +20,7 @@ gemspec
 end
 
 if ENV['USE_FIXED_GEMS']
-  ['facets'].each do |library|
+  ['facets', 'rubyzip'].each do |library|
     library_path = File.expand_path("../#{library}", __dir__)
     if Dir.exist?(library_path) && !ENV['USE_GITHUB_REPOSITORY']
       gem library, path: library_path