diff --git a/README.rdoc b/README.rdoc
index 78811e7..e689270 100644
--- a/README.rdoc
+++ b/README.rdoc
@@ -67,4 +67,8 @@ Before running the specs, add your SalesKing credentials to /spec/settings.yml
   BUNDLE_GEMFILE=ci/Gemfile_ar3 bundle install
   BUNDLE_GEMFILE=ci/Gemfile_ar3 bundle exec rake spec
 
+  #test with ActiveResource 5
+  BUNDLE_GEMFILE=ci/Gemfile_ar5 bundle install
+  BUNDLE_GEMFILE=ci/Gemfile_ar5 bundle exec rake spec
+
 Copyright (c) 2011-2016 Georg Leciejewski, released under the MIT license
diff --git a/ci/Gemfile_ar5 b/ci/Gemfile_ar5
new file mode 100644
index 0000000..5f99fc5
--- /dev/null
+++ b/ci/Gemfile_ar5
@@ -0,0 +1,11 @@
+source 'https://rubygems.org'
+gem "rake"
+gem "rdoc"
+gem "activesupport", "5.2"
+gem "activeresource", "5.0"
+gem "sk_api_schema"
+gem "curb"
+group :test do
+  gem "rspec"
+  gem "simplecov"
+end
diff --git a/ci/Gemfile_ar5.lock b/ci/Gemfile_ar5.lock
new file mode 100644
index 0000000..847c43f
--- /dev/null
+++ b/ci/Gemfile_ar5.lock
@@ -0,0 +1,68 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    activemodel (5.2.0)
+      activesupport (= 5.2.0)
+    activemodel-serializers-xml (1.0.2)
+      activemodel (> 5.x)
+      activesupport (> 5.x)
+      builder (~> 3.1)
+    activeresource (5.0.0)
+      activemodel (>= 5.0, < 6)
+      activemodel-serializers-xml (~> 1.0)
+      activesupport (>= 5.0, < 6)
+    activesupport (5.2.0)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
+      minitest (~> 5.1)
+      tzinfo (~> 1.1)
+    builder (3.2.3)
+    concurrent-ruby (1.0.5)
+    curb (0.9.6)
+    diff-lcs (1.3)
+    docile (1.3.1)
+    i18n (1.1.0)
+      concurrent-ruby (~> 1.0)
+    json (2.1.0)
+    minitest (5.11.3)
+    rake (12.3.1)
+    rdoc (6.0.4)
+    rspec (3.8.0)
+      rspec-core (~> 3.8.0)
+      rspec-expectations (~> 3.8.0)
+      rspec-mocks (~> 3.8.0)
+    rspec-core (3.8.0)
+      rspec-support (~> 3.8.0)
+    rspec-expectations (3.8.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.8.0)
+    rspec-mocks (3.8.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.8.0)
+    rspec-support (3.8.0)
+    simplecov (0.16.1)
+      docile (~> 1.1)
+      json (>= 1.8, < 3)
+      simplecov-html (~> 0.10.0)
+    simplecov-html (0.10.2)
+    sk_api_schema (0.11.0)
+      activesupport
+    thread_safe (0.3.6)
+    tzinfo (1.2.5)
+      thread_safe (~> 0.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  activeresource (= 5.0)
+  activesupport (= 5.2)
+  curb
+  rake
+  rdoc
+  rspec
+  simplecov
+  sk_api_schema
+
+BUNDLED WITH
+   1.16.0
diff --git a/lib/sk_sdk/base.rb b/lib/sk_sdk/base.rb
index fcd55c9..befb513 100644
--- a/lib/sk_sdk/base.rb
+++ b/lib/sk_sdk/base.rb
@@ -71,7 +71,7 @@ def self.site_api_url(site)
 
   # Unfortunately only using AR v4+ we can create additional accessors
   # to get info on collection info and links
-  if ActiveResource::VERSION::MAJOR == 4
+  if [4,5].include?(ActiveResource::VERSION::MAJOR)
     class SkCollection < ActiveResource::Collection
       attr_accessor :current_page, :per_page, :total_entries, :total_pages
 
diff --git a/spec/sk_sdk/resources/payment_spec.rb b/spec/sk_sdk/resources/payment_spec.rb
index de1d9ac..5550962 100644
--- a/spec/sk_sdk/resources/payment_spec.rb
+++ b/spec/sk_sdk/resources/payment_spec.rb
@@ -77,8 +77,4 @@
 
 end
 
-  def destroy_payment
-
-  end
-
 end
diff --git a/spec/sk_sdk/resources/product_spec.rb b/spec/sk_sdk/resources/product_spec.rb
index eff2468..8b557d3 100644
--- a/spec/sk_sdk/resources/product_spec.rb
+++ b/spec/sk_sdk/resources/product_spec.rb
@@ -44,13 +44,6 @@
       product.name.should == @product.name
     end
 
-    it "should edit a product" do
-      @product.name = 'A new product name'
-      @product.lock_version.should == 0
-      @product.save
-      @product.lock_version.should == 1 # because save returns the data
-    end
-
     it "should fail edit a product" do
       @product.name = ''
       @product.save.should == false