1 files changed, 4 insertions, 4 deletions
diff --git a/spec/ruby/optional/capi/mutex_spec.rb b/spec/ruby/optional/capi/mutex_spec.rb
index 1b76c5c250..34659974f5 100644
--- a/spec/ruby/optional/capi/mutex_spec.rb
+++ b/spec/ruby/optional/capi/mutex_spec.rb
@@ -46,14 +46,14 @@ describe "C-API Mutex functions" do
 
     it "throws an exception when already locked in the same thread" do
       @m.lock
-      lambda { @s.rb_mutex_lock(@m) }.should raise_error(ThreadError)
+      -> { @s.rb_mutex_lock(@m) }.should raise_error(ThreadError)
       @m.locked?.should be_true
     end
   end
 
   describe "rb_mutex_unlock" do
     it "raises an exception when not locked" do
-      lambda { @s.rb_mutex_unlock(@m) }.should raise_error(ThreadError)
+      -> { @s.rb_mutex_unlock(@m) }.should raise_error(ThreadError)
       @m.locked?.should be_false
     end
 
@@ -66,7 +66,7 @@ describe "C-API Mutex functions" do
 
   describe "rb_mutex_sleep" do
     it "throws an exception when the mutex is not locked" do
-      lambda { @s.rb_mutex_sleep(@m, 0.1) }.should raise_error(ThreadError)
+      -> { @s.rb_mutex_sleep(@m, 0.1) }.should raise_error(ThreadError)
       @m.locked?.should be_false
     end
 
@@ -82,7 +82,7 @@ describe "C-API Mutex functions" do
 
   describe "rb_mutex_synchronize" do
     it "calls the function while the mutex is locked" do
-      callback = lambda { @m.locked?.should be_true }
+      callback = -> { @m.locked?.should be_true }
       @s.rb_mutex_synchronize(@m, callback)
     end
   end