rake test fails with ruby 3.2.0preview3 about mocha HOT 5 CLOSED

diff --git a/test/unit/parameter_matchers/regexp_matches_test.rb b/test/unit/parameter_matchers/regexp_matches_test.rb
index e0282c8..9251054 100644
--- a/test/unit/parameter_matchers/regexp_matches_test.rb
+++ b/test/unit/parameter_matchers/regexp_matches_test.rb
@@ -32,13 +32,13 @@ class RegexpMatchesTest < Mocha::TestCase
   end
 
   def test_should_not_raise_error_on_argument_that_does_not_respond_to_equals_tilde
-    object_not_responding_to_equals_tilde = Class.new { undef =~ }.new
+    object_not_responding_to_equals_tilde = Class.new { undef =~ if respond_to?(:=~) }.new
     matcher = regexp_matches(/oo/)
     assert_nothing_raised { matcher.matches?([object_not_responding_to_equals_tilde]) }
   end
 
   def test_should_not_match_on_argument_that_does_not_respond_to_equals_tilde
-    object_not_responding_to_equals_tilde = Class.new { undef =~ }.new
+    object_not_responding_to_equals_tilde = Class.new { undef =~ if respond_to?(:=~) }.new
     matcher = regexp_matches(/oo/)
     assert !matcher.matches?([object_not_responding_to_equals_tilde])
   end