Make proc/Proc.new without block an error instead of warning

The warning for these was added in 2.7.

1 files changed, 1 insertions, 1 deletions

diff --git a/spec/ruby/core/proc/new_spec.rb b/spec/ruby/core/proc/new_spec.rb
index cc033467e5..faaf85fea5 100644
--- a/spec/ruby/core/proc/new_spec.rb
+++ b/spec/ruby/core/proc/new_spec.rb
@@ -203,7 +203,7 @@ describe "Proc.new without a block" do
     end
   end
 
-  ruby_version_is "2.7" do
+  ruby_version_is "2.7" ... "2.8" do
     it "can be created if invoked from within a method with a block" do
       -> { ProcSpecs.new_proc_in_method { "hello" } }.should complain(/Capturing the given block using Proc.new is deprecated/)
     end