diff --git a/.travis.yml b/.travis.yml
index 8ee1bede..eb76cd82 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,7 +18,7 @@ sudo: false
 env:
   global:
     # If changing this number, please also change it in `test/test_helper.rb`.
-    - STRIPE_MOCK_VERSION=0.25.0
+    - STRIPE_MOCK_VERSION=0.26.0
 
 cache:
   directories:
diff --git a/lib/stripe.rb b/lib/stripe.rb
index 77415929..10bd41d0 100644
--- a/lib/stripe.rb
+++ b/lib/stripe.rb
@@ -89,6 +89,7 @@ require "stripe/token"
 require "stripe/topup"
 require "stripe/transfer"
 require "stripe/usage_record"
+require "stripe/usage_record_summary"
 
 # OAuth
 require "stripe/oauth"
diff --git a/lib/stripe/subscription_item.rb b/lib/stripe/subscription_item.rb
index 2e8704fc..dd189aba 100644
--- a/lib/stripe/subscription_item.rb
+++ b/lib/stripe/subscription_item.rb
@@ -8,5 +8,10 @@ module Stripe
     include Stripe::APIOperations::Save
 
     OBJECT_NAME = "subscription_item".freeze
+
+    def usage_record_summaries(params = {}, opts = {})
+      resp, opts = request(:get, resource_url + "/usage_record_summaries", params, Util.normalize_opts(opts))
+      Util.convert_to_stripe_object(resp.data, opts)
+    end
   end
 end
diff --git a/lib/stripe/usage_record_summary.rb b/lib/stripe/usage_record_summary.rb
new file mode 100644
index 00000000..9b9e515c
--- /dev/null
+++ b/lib/stripe/usage_record_summary.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+module Stripe
+  class UsageRecordSummary < StripeObject
+    OBJECT_NAME = "usage_record_summary".freeze
+  end
+end
diff --git a/lib/stripe/util.rb b/lib/stripe/util.rb
index 2b00fabf..061e54e0 100644
--- a/lib/stripe/util.rb
+++ b/lib/stripe/util.rb
@@ -98,6 +98,7 @@ module Stripe
         Topup::OBJECT_NAME                    => Topup,
         Transfer::OBJECT_NAME                 => Transfer,
         UsageRecord::OBJECT_NAME              => UsageRecord,
+        UsageRecordSummary::OBJECT_NAME       => UsageRecordSummary,
       }
     end
 
diff --git a/test/stripe/usage_record_summary_test.rb b/test/stripe/usage_record_summary_test.rb
new file mode 100644
index 00000000..2b2d48b2
--- /dev/null
+++ b/test/stripe/usage_record_summary_test.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+require File.expand_path("../../test_helper", __FILE__)
+
+module Stripe
+  class UsageRecordSummaryTest < Test::Unit::TestCase
+    setup do
+      @sub_item = Stripe::SubscriptionItem.retrieve("si_123")
+    end
+
+    should "be listable" do
+      transactions = @sub_item.usage_record_summaries
+
+      assert_requested :get, "#{Stripe.api_base}/v1/subscription_items/#{@sub_item.id}/usage_record_summaries"
+      assert transactions.data.is_a?(Array)
+      assert transactions.first.is_a?(Stripe::UsageRecordSummary)
+    end
+  end
+end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 9073ad0b..ee35615b 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -16,7 +16,7 @@ PROJECT_ROOT = File.expand_path("../../", __FILE__)
 require File.expand_path("../test_data", __FILE__)
 
 # If changing this number, please also change it in `.travis.yml`.
-MOCK_MINIMUM_VERSION = "0.25.0".freeze
+MOCK_MINIMUM_VERSION = "0.26.0".freeze
 MOCK_PORT = ENV["STRIPE_MOCK_PORT"] || 12_111
 
 # Disable all real network connections except those that are outgoing to