diff --git a/lib/sidekiq/api.rb b/lib/sidekiq/api.rb
index 1348037a7..5ba5f0cfe 100644
--- a/lib/sidekiq/api.rb
+++ b/lib/sidekiq/api.rb
@@ -218,7 +218,7 @@ def latency
       Time.now.to_f - Sidekiq.load_json(entry)['enqueued_at']
     end
 
-    def each(&block)
+    def each
       initial_size = size
       deleted_size = 0
       page = 0
@@ -233,7 +233,7 @@ def each(&block)
         break if entries.empty?
         page += 1
         entries.each do |entry|
-          block.call Job.new(entry, @name)
+          yield Job.new(entry, @name)
         end
         deleted_size = initial_size - size
       end
@@ -474,7 +474,7 @@ def schedule(timestamp, message)
       end
     end
 
-    def each(&block)
+    def each
       initial_size = @_size
       offset_size = 0
       page = -1
@@ -489,7 +489,7 @@ def each(&block)
         break if elements.empty?
         page -= 1
         elements.each do |element, score|
-          block.call SortedEntry.new(self, score, element)
+          yield SortedEntry.new(self, score, element)
         end
         offset_size = initial_size - @_size
       end
@@ -651,7 +651,7 @@ def self.cleanup
       count
     end
 
-    def each(&block)
+    def each
       procs = Sidekiq.redis { |conn| conn.smembers('processes') }.sort
 
       Sidekiq.redis do |conn|
@@ -760,7 +760,7 @@ def identity
   class Workers
     include Enumerable
 
-    def each(&block)
+    def each
       Sidekiq.redis do |conn|
         procs = conn.smembers('processes')
         procs.sort.each do |key|
diff --git a/lib/sidekiq/middleware/chain.rb b/lib/sidekiq/middleware/chain.rb
index 47c64d0cc..2b12782ea 100644
--- a/lib/sidekiq/middleware/chain.rb
+++ b/lib/sidekiq/middleware/chain.rb
@@ -120,11 +120,11 @@ def clear
         entries.clear
       end
 
-      def invoke(*args, &final_action)
+      def invoke(*args)
         chain = retrieve.dup
         traverse_chain = lambda do
           if chain.empty?
-            final_action.call
+            yield
           else
             chain.shift.call(*args, &traverse_chain)
           end