Update to ruby/spec@875a09e

1 files changed, 2 insertions, 2 deletions

diff --git a/spec/ruby/core/mutex/lock_spec.rb b/spec/ruby/core/mutex/lock_spec.rb
index a1a2972d8c..7a39817b11 100644
--- a/spec/ruby/core/mutex/lock_spec.rb
+++ b/spec/ruby/core/mutex/lock_spec.rb
@@ -14,12 +14,12 @@ describe "Mutex#lock" do
   it "blocks the caller if already locked" do
     m = Mutex.new
     m.lock
-    lambda { m.lock }.should block_caller
+    -> { m.lock }.should block_caller
   end
 
   it "does not block the caller if not locked" do
     m = Mutex.new
-    lambda { m.lock }.should_not block_caller
+    -> { m.lock }.should_not block_caller
   end
 
   # Unable to find a specific ticket but behavior change may be