diff --git a/Makefile b/Makefile
index 09eccf4..0e1cad5 100644
--- a/Makefile
+++ b/Makefile
@@ -2,12 +2,18 @@
 export COMPOSE_IGNORE_ORPHANS ?= true
 export RUBY_VERSION ?= 2.3.1
 RUBY_VERSION_MAJOR = $(word 1,$(subst ., ,$(RUBY_VERSION)))
+RUBY_VERSION_MINOR = $(word 2,$(subst ., ,$(RUBY_VERSION)))
 export BUNDLER_VERSION ?=
 ifeq ($(BUNDLER_VERSION),)
 ifeq ($(RUBY_VERSION_MAJOR),2)
+# Use old bundler for Ruby 2.3-2.6; Ruby 2.7 needs bundler 2.x to avoid resolver bugs
+ifeq ($(RUBY_VERSION_MINOR),7)
+export BUNDLER_VERSION = 2.4.22
+else
 export BUNDLER_VERSION = 1.17.3
 endif
 endif
+endif
 PROJECT_NAME = $(shell ls *.gemspec | sed 's/\.gemspec//')
 export COMPOSE_PROJECT_NAME ?= $(PROJECT_NAME)-$(subst .,_,$(RUBY_VERSION))
 
diff --git a/lib/aptible/api/external_aws_account.rb b/lib/aptible/api/external_aws_account.rb
index 45c67ba..90f7191 100644
--- a/lib/aptible/api/external_aws_account.rb
+++ b/lib/aptible/api/external_aws_account.rb
@@ -27,6 +27,23 @@ def organization
         auth = Aptible::Auth::Organization.new(token: token, headers: headers)
         @organization = auth.find_by_url(organization_url)
       end
+
+      def check!
+        response = HyperResource::Link.new(
+          self,
+          'href' => "#{href}/check"
+        ).get
+        ExternalAwsAccountCheckResponse.new(
+          state: response.attributes['state'],
+          checks: (response.attributes['checks'] || []).map do |c|
+            ExternalAwsAccountCheck.new(
+              check_name: c['check_name'],
+              state: c['state'],
+              details: c['details']
+            )
+          end
+        )
+      end
     end
   end
 end
diff --git a/lib/aptible/api/external_aws_account_check_response.rb b/lib/aptible/api/external_aws_account_check_response.rb
new file mode 100644
index 0000000..6f1d8cb
--- /dev/null
+++ b/lib/aptible/api/external_aws_account_check_response.rb
@@ -0,0 +1,22 @@
+module Aptible
+  module Api
+    class ExternalAwsAccountCheckResponse
+      attr_reader :state, :checks
+
+      def initialize(state:, checks:)
+        @state = state
+        @checks = checks
+      end
+    end
+
+    class ExternalAwsAccountCheck
+      attr_reader :check_name, :state, :details
+
+      def initialize(check_name:, state:, details:)
+        @check_name = check_name
+        @state = state
+        @details = details
+      end
+    end
+  end
+end
diff --git a/lib/aptible/api/resource.rb b/lib/aptible/api/resource.rb
index e71f7a5..d952e79 100644
--- a/lib/aptible/api/resource.rb
+++ b/lib/aptible/api/resource.rb
@@ -58,6 +58,7 @@ def root_url
 require 'aptible/api/disk_attachment'
 require 'aptible/api/maintenance'
 require 'aptible/api/vpn_tunnel'
+require 'aptible/api/external_aws_account_check_response'
 require 'aptible/api/external_aws_account'
 require 'aptible/api/external_aws_resource'
 require 'aptible/api/external_aws_database_credential'
diff --git a/lib/aptible/api/version.rb b/lib/aptible/api/version.rb
index 6e41988..da87dec 100644
--- a/lib/aptible/api/version.rb
+++ b/lib/aptible/api/version.rb
@@ -1,5 +1,5 @@
 module Aptible
   module Api
-    VERSION = '1.11.2'.freeze
+    VERSION = '1.12.0'.freeze
   end
 end
diff --git a/spec/aptible/api_spec.rb b/spec/aptible/api_spec.rb
index fcafc9c..19fd1d3 100644
--- a/spec/aptible/api_spec.rb
+++ b/spec/aptible/api_spec.rb
@@ -6,12 +6,17 @@
   it 'should have a configurable root_url' do
     config = described_class.configuration
     expect(config).to be_a GemConfig::Configuration
-    expect(config.root_url).to eq 'https://api.aptible.com'
+    with_env 'APTIBLE_API_ROOT_URL', nil do
+      load 'aptible/api.rb'
+      config.reset
+      expect(config.root_url).to eq 'https://api.aptible.com'
+    end
   end
 
-  pending 'uses ENV["APTIBLE_API_ROOT_URL"] if defined' do
+  it 'uses ENV["APTIBLE_API_ROOT_URL"] if defined' do
     config = described_class.configuration
     with_env 'APTIBLE_API_ROOT_URL', 'http://foobar.com' do
+      load 'aptible/api.rb'
       config.reset
       expect(config.root_url).to eq 'http://foobar.com'
     end