diff --git a/Rakefile b/Rakefile
index 4f56250..1dfdfee 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+ENV["MT_NO_PLUGINS"] = "1" # Disable autoloading of MiniTest plugins.
+
 require "bundler/gem_tasks"
 require "rake/testtask"
 require "standard/rake"