diff --git a/test/spell_checking/test_method_name_check.rb b/test/spell_checking/test_method_name_check.rb
index 4daaf7c..2ae5fa7 100644
--- a/test/spell_checking/test_method_name_check.rb
+++ b/test/spell_checking/test_method_name_check.rb
@@ -98,6 +98,8 @@ def nil.empty?
   end
 
   def test_does_not_append_suggestions_twice
+    omit "This test is not working with JRuby" if RUBY_ENGINE == "jruby"
+
     error = assert_raise NoMethodError do
       begin
         @user.firstname
@@ -110,6 +112,8 @@ def test_does_not_append_suggestions_twice
   end
 
   def test_does_not_append_suggestions_three_times
+    omit "This test is not working with JRuby" if RUBY_ENGINE == "jruby"
+
     error = assert_raise NoMethodError do
       begin
         @user.raise_no_method_error
diff --git a/test/test_ractor_compatibility.rb b/test/test_ractor_compatibility.rb
index 3166d0b..dfc9dc7 100644
--- a/test/test_ractor_compatibility.rb
+++ b/test/test_ractor_compatibility.rb
@@ -5,6 +5,10 @@
 class RactorCompatibilityTest < Test::Unit::TestCase
   def test_class_name_suggestion_works_in_ractor
     assert_ractor(<<~CODE, require_relative: "helper")
+      class Ractor
+        alias value take
+      end unless Ractor.method_defined? :value # compat with Ruby 3.4 and olders
+
       class ::Book; end
       include DidYouMean::TestHelper
       error = Ractor.new {
@@ -22,6 +26,10 @@ class ::Book; end
 
   def test_key_name_suggestion_works_in_ractor
     assert_ractor(<<~CODE, require_relative: "helper")
+      class Ractor
+        alias value take
+      end unless Ractor.method_defined? :value # compat with Ruby 3.4 and olders
+
       include DidYouMean::TestHelper
       error = Ractor.new {
                 begin
@@ -41,6 +49,10 @@ def test_key_name_suggestion_works_in_ractor
 
   def test_method_name_suggestion_works_in_ractor
     assert_ractor(<<~CODE, require_relative: "helper")
+      class Ractor
+        alias value take
+      end unless Ractor.method_defined? :value # compat with Ruby 3.4 and olders
+
       include DidYouMean::TestHelper
       error = Ractor.new {
                 begin
@@ -59,6 +71,10 @@ def test_method_name_suggestion_works_in_ractor
   if defined?(::NoMatchingPatternKeyError)
     def test_pattern_key_name_suggestion_works_in_ractor
       assert_ractor(<<~CODE, require_relative: "helper")
+        class Ractor
+          alias value take
+        end unless Ractor.method_defined? :value # compat with Ruby 3.4 and olders
+
         include DidYouMean::TestHelper
         error = Ractor.new {
                   begin
@@ -81,6 +97,10 @@ def test_pattern_key_name_suggestion_works_in_ractor
 
   def test_can_raise_other_name_error_in_ractor
     assert_ractor(<<~CODE, require_relative: "helper")
+      class Ractor
+        alias value take
+      end unless Ractor.method_defined? :value # compat with Ruby 3.4 and olders
+
       class FirstNameError < NameError; end
       include DidYouMean::TestHelper
       error = Ractor.new {
@@ -98,6 +118,10 @@ class FirstNameError < NameError; end
 
   def test_variable_name_suggestion_works_in_ractor
     assert_ractor(<<~CODE, require_relative: "helper")
+      class Ractor
+        alias value take
+      end unless Ractor.method_defined? :value # compat with Ruby 3.4 and olders
+
       include DidYouMean::TestHelper
       error = Ractor.new {
         in_ractor = in_ractor = 1