diff --git a/.travis.yml b/.travis.yml
index e357a0ca3e..f56bffdaab 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,7 @@ cache:
 
 services:
   - memcached
+  - redis-server
 
 addons:
   postgresql: "9.6"
@@ -41,7 +42,6 @@ before_script:
   # Decodes to e.g. `export VARIABLE=VALUE`
   - $(base64 --decode <<< "ZXhwb3J0IFNBVUNFX0FDQ0VTU19LRVk9YTAzNTM0M2YtZTkyMi00MGIzLWFhM2MtMDZiM2VhNjM1YzQ4")
   - $(base64 --decode <<< "ZXhwb3J0IFNBVUNFX1VTRVJOQU1FPXJ1YnlvbnJhaWxz")
-  - redis-server --bind 127.0.0.1 --port 6379 --requirepass 'password' --daemonize yes
 
 script: 'ci/travis.rb'
 
diff --git a/actioncable/test/subscription_adapter/redis_test.rb b/actioncable/test/subscription_adapter/redis_test.rb
index 69120d5753..63823d6ef0 100644
--- a/actioncable/test/subscription_adapter/redis_test.rb
+++ b/actioncable/test/subscription_adapter/redis_test.rb
@@ -4,12 +4,15 @@ require "test_helper"
 require_relative "common"
 require_relative "channel_prefix"
 
+require "active_support/testing/method_call_assertions"
+require "action_cable/subscription_adapter/redis"
+
 class RedisAdapterTest < ActionCable::TestCase
   include CommonSubscriptionAdapterTest
   include ChannelPrefixTest
 
   def cable_config
-    { adapter: "redis", driver: "ruby", url: "redis://:password@127.0.0.1:6379/12" }
+    { adapter: "redis", driver: "ruby" }
   end
 end
 
@@ -23,6 +26,22 @@ class RedisAdapterTest::AlternateConfiguration < RedisAdapterTest
   def cable_config
     alt_cable_config = super.dup
     alt_cable_config.delete(:url)
-    alt_cable_config.merge(host: "127.0.0.1", port: 6379, db: 12, password: "password")
+    alt_cable_config.merge(host: "127.0.0.1", port: 6379, db: 12)
+  end
+end
+
+class RedisAdapterTest::Connector < ActiveSupport::TestCase
+  include ActiveSupport::Testing::MethodCallAssertions
+
+  test "slices url, host, port, db, and password from config" do
+    config = { url: 1, host: 2, port: 3, db: 4, password: 5 }
+
+    assert_called_with ::Redis, :new, [ config ] do
+      connect config.merge(other: "unrelated", stuff: "here")
+    end
+  end
+
+  def connect(config)
+    ActionCable::SubscriptionAdapter::Redis.redis_connector.call(config)
   end
 end