diff --git a/lib/async/redis/sentinels.rb b/lib/async/redis/sentinels.rb
index 30ec901..575a95b 100644
--- a/lib/async/redis/sentinels.rb
+++ b/lib/async/redis/sentinels.rb
@@ -50,7 +50,7 @@ def resolve_address
 			
 			def resolve_master
 				@sentinel_endpoints.each do |sentinel_endpoint|
-					client = Client.new(sentinel_endpoint)
+					client = Client.new(sentinel_endpoint, protocol: @protocol)
 					
 					begin
 						address = client.call('sentinel', 'get-master-addr-by-name', @master_name)
@@ -66,7 +66,7 @@ def resolve_master
 			
 			def resolve_slave
 				@sentinel_endpoints.each do |sentinel_endpoint|
-					client = Client.new(sentinel_endpoint)
+					client = Client.new(sentinel_endpoint, protocol: @protocol)
 					
 					begin
 						reply = client.call('sentinel', 'slaves', @master_name)