diff --git a/core/proc/parameters_spec.rb b/core/proc/parameters_spec.rb
index f1fe00c35..cf8a8f5b1 100644
--- a/core/proc/parameters_spec.rb
+++ b/core/proc/parameters_spec.rb
@@ -159,10 +159,17 @@
     proc { |**nil| }.parameters.should == [[:nokey]]
   end
 
-  ruby_version_is "3.4" do
-    it "handles the usage of `it` as a paramater" do
+  ruby_version_is "3.4"..."4.0" do
+    it "handles the usage of `it` as a parameter" do
       eval("proc { it }").parameters.should == [[:opt, nil]]
       eval("lambda { it }").parameters.should == [[:req]]
     end
   end
+
+  ruby_version_is "4.0" do
+    it "handles the usage of `it` as a parameter" do
+      eval("proc { it }").parameters.should == [[:opt]]
+      eval("lambda { it }").parameters.should == [[:req]]
+    end
+  end
 end