diff --git a/test/stdlib/Method_test.rb b/test/stdlib/Method_test.rb
index d38280f1d..05da1a947 100644
--- a/test/stdlib/Method_test.rb
+++ b/test/stdlib/Method_test.rb
@@ -154,8 +154,10 @@ def test_receiver
   end
 
   def test_source_location
-    assert_send_type  '() -> [String, Integer]',
-                      METHOD, :source_location
+    if_ruby(..."4.1") do
+      assert_send_type  '() -> [String, Integer]',
+                        METHOD, :source_location
+    end
     assert_send_type  '() -> nil',
                       method(:__id__), :source_location
   end
diff --git a/test/stdlib/Proc_test.rb b/test/stdlib/Proc_test.rb
index 2ee9fc6ac..481c60535 100644
--- a/test/stdlib/Proc_test.rb
+++ b/test/stdlib/Proc_test.rb
@@ -139,8 +139,10 @@ def test_parameters
   end
 
   def test_source_location
-    assert_send_type  '() -> [String, Integer]',
-                      proc{}, :source_location
+    if_ruby(..."4.1") do
+      assert_send_type  '() -> [String, Integer]',
+                        proc{}, :source_location
+    end
     assert_send_type  '() -> nil',
                       Proc.new(&Kernel.method(:print)), :source_location
   end
diff --git a/test/stdlib/UnboundMethod_test.rb b/test/stdlib/UnboundMethod_test.rb
index 8f9f65f13..604c8960f 100644
--- a/test/stdlib/UnboundMethod_test.rb
+++ b/test/stdlib/UnboundMethod_test.rb
@@ -89,10 +89,12 @@ def test_parameters
   end
 
   def test_source_location
-    assert_send_type  '() -> [String, Integer]?',
-                      UMETH, :source_location
-    assert_send_type  '() -> [String, Integer]?',
-                      ParamMeths.instance_method(:leading_optional), :source_location
+    if_ruby(..."4.1") do
+      assert_send_type  '() -> [String, Integer]?',
+                        UMETH, :source_location
+      assert_send_type  '() -> [String, Integer]?',
+                        ParamMeths.instance_method(:leading_optional), :source_location
+    end
   end
 
   def test_super_method