diff --git a/test/test_helper.rb b/test/test_helper.rb
index 4849b07e8..b9295c226 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -1,9 +1,12 @@
 $LOAD_PATH.unshift File.expand_path("../lib", __FILE__)
-require "rbs"
-require "rbs/annotate"
+
 require "tmpdir"
 require "stringio"
 require "open3"
+require "bundler" # Explicitly require bundler because ruby CI runs without bundler
+
+require "rbs"
+require "rbs/annotate"
 require "test_skip"
 
 unless ENV["XDG_CACHE_HOME"]