diff --git a/test/runner.rb b/test/runner.rb
index 3e2e1316b1..d23d9f0bd2 100644
--- a/test/runner.rb
+++ b/test/runner.rb
@@ -2,6 +2,7 @@
 
 # Should be done in rubygems test files?
 ENV["GEM_SKIP"] = ENV["GEM_HOME"] = ENV["GEM_PATH"] = "".freeze
+ENV.delete("RUBY_CODESIGN")
 
 # Get bundled gems on load path
 Dir.glob("#{__dir__}/../gems/*/*.gemspec")