diff --git a/spec/bundler/spec_helper.rb b/spec/bundler/spec_helper.rb
index 23db133b67..892ad10e98 100644
--- a/spec/bundler/spec_helper.rb
+++ b/spec/bundler/spec_helper.rb
@@ -74,6 +74,8 @@ RSpec.configure do |config|
     ENV["BUNDLER_SPEC_RUN"] = "true"
     ENV["BUNDLER_NO_OLD_RUBYGEMS_WARNING"] = "true"
     ENV["BUNDLE_USER_CONFIG"] = ENV["BUNDLE_USER_CACHE"] = ENV["BUNDLE_USER_PLUGIN"] = nil
+    ENV["BUNDLE_APP_CONFIG"] = nil
+    ENV["BUNDLE_SILENCE_ROOT_WARNING"] = nil
     ENV["RUBYGEMS_GEMDEPS"] = nil
     ENV["XDG_CONFIG_HOME"] = nil
     ENV["GEMRC"] = nil