diff --git a/Gemfile.lock b/Gemfile.lock
index c97e6ca..16df641 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    redis_stream (0.1.3)
+    redis_stream (0.1.4)
 
 GEM
   remote: https://rubygems.org/
diff --git a/spec/dummy_redis.rb b/spec/dummy_redis.rb
index c35a81a..4fa75e6 100644
--- a/spec/dummy_redis.rb
+++ b/spec/dummy_redis.rb
@@ -8,7 +8,7 @@ def xadd(stream, data, approximate: nil, maxlen: nil, nomkstream: nil, id: "*")
     @streams[stream] << data
   end
 
-  def xreadgroup(group, consumer, streams, condition, count: 1, block: 5000)
+  def xreadgroup(group, consumer, streams, condition, count: 1, block: 5000, noack: false)
     @streams[streams] ||= []
     @streams[streams].map.with_index do |data, index|
       [streams, {index => data}]