diff --git a/.travis.yml b/.travis.yml
index c80e7af..6111b19 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,6 +17,20 @@ gemfile:
   - gemfiles/4.0.gemfile
   - gemfiles/4.1.gemfile
   - gemfiles/4.2.gemfile
+  - gemfiles/5.0.gemfile
+matrix:
+  fast_finish: true
+  allow_failures:
+    - rvm: jruby-19mode
+      gemfile: gemfiles/5.0.gemfile
+    - rvm: 1.9.3
+      gemfile: gemfiles/5.0.gemfile
+    - rvm: 2.0.0
+      gemfile: gemfiles/5.0.gemfile
+    - rvm: 2.1.0
+      gemfile: gemfiles/5.0.gemfile
+    - rvm: rbx-2
+      gemfile: gemfiles/5.0.gemfile
 branches:
   only:
     - master
diff --git a/Appraisals b/Appraisals
index 1ec5227..55f6287 100644
--- a/Appraisals
+++ b/Appraisals
@@ -13,3 +13,7 @@ end
 appraise '4.2' do
   gem 'activerecord', "~> 4.2.5.1"
 end
+
+appraise '5.0' do
+  gem 'activerecord', "~> 5.0.0.beta2"
+end
diff --git a/gemfiles/5.0.gemfile b/gemfiles/5.0.gemfile
new file mode 100644
index 0000000..055face
--- /dev/null
+++ b/gemfiles/5.0.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "activerecord-jdbcsqlite3-adapter", :platforms => :jruby
+gem "jdbc-sqlite3", :platforms => :jruby
+gem "sqlite3", "~> 1.3.10", :platforms => :ruby
+gem "activerecord", "~> 5.0.0.beta2"
+
+gemspec :path => "../"
diff --git a/gemfiles/5.0.gemfile.lock b/gemfiles/5.0.gemfile.lock
new file mode 100644
index 0000000..c0d094b
--- /dev/null
+++ b/gemfiles/5.0.gemfile.lock
@@ -0,0 +1,113 @@
+PATH
+  remote: ../
+  specs:
+    factory_girl (4.5.0)
+      activesupport (>= 3.0.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    activemodel (5.0.0.beta2)
+      activesupport (= 5.0.0.beta2)
+    activerecord (5.0.0.beta2)
+      activemodel (= 5.0.0.beta2)
+      activesupport (= 5.0.0.beta2)
+      arel (~> 7.0)
+    activerecord-jdbc-adapter (1.3.19)
+      activerecord (>= 2.2)
+    activerecord-jdbcsqlite3-adapter (1.3.19)
+      activerecord-jdbc-adapter (~> 1.3.19)
+      jdbc-sqlite3 (>= 3.7.2, < 3.9)
+    activesupport (5.0.0.beta2)
+      concurrent-ruby (~> 1.0)
+      i18n (~> 0.7)
+      json (~> 1.7, >= 1.7.7)
+      method_source
+      minitest (~> 5.1)
+      tzinfo (~> 1.1)
+    appraisal (2.1.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
+    arel (7.0.0)
+    aruba (0.7.4)
+      childprocess (>= 0.3.6)
+      cucumber (>= 1.1.1)
+      rspec-expectations (>= 2.7.0)
+    bourne (1.6.0)
+      mocha (~> 1.1)
+    builder (3.2.2)
+    childprocess (0.5.9)
+      ffi (~> 1.0, >= 1.0.11)
+    concurrent-ruby (1.0.0)
+    concurrent-ruby (1.0.0-java)
+    cucumber (1.3.20)
+      builder (>= 2.1.2)
+      diff-lcs (>= 1.1.3)
+      gherkin (~> 2.12)
+      multi_json (>= 1.7.5, < 2.0)
+      multi_test (>= 0.1.2)
+    diff-lcs (1.1.3)
+    docile (1.1.5)
+    ffi (1.9.10)
+    ffi (1.9.10-java)
+    gherkin (2.12.2)
+      multi_json (~> 1.3)
+    gherkin (2.12.2-java)
+      multi_json (~> 1.3)
+    i18n (0.7.0)
+    jdbc-sqlite3 (3.8.11.2)
+    json (1.8.3)
+    json (1.8.3-java)
+    metaclass (0.0.4)
+    method_source (0.8.2)
+    minitest (5.8.4)
+    mocha (1.1.0)
+      metaclass (~> 0.0.1)
+    multi_json (1.11.2)
+    multi_test (0.1.2)
+    rake (10.5.0)
+    rspec (2.12.0)
+      rspec-core (~> 2.12.0)
+      rspec-expectations (~> 2.12.0)
+      rspec-mocks (~> 2.12.0)
+    rspec-core (2.12.2)
+    rspec-expectations (2.12.1)
+      diff-lcs (~> 1.1.3)
+    rspec-mocks (2.12.2)
+    simplecov (0.11.2)
+      docile (~> 1.1.0)
+      json (~> 1.8)
+      simplecov-html (~> 0.10.0)
+    simplecov-html (0.10.0)
+    sqlite3 (1.3.11)
+    thor (0.19.1)
+    thread_safe (0.3.5)
+    thread_safe (0.3.5-java)
+    timecop (0.8.0)
+    tzinfo (1.2.2)
+      thread_safe (~> 0.1)
+    yard (0.8.7.6)
+
+PLATFORMS
+  java
+  ruby
+
+DEPENDENCIES
+  activerecord (~> 5.0.0.beta2)
+  activerecord-jdbcsqlite3-adapter
+  appraisal (~> 2.1.0)
+  aruba
+  bourne
+  cucumber (~> 1.3.15)
+  factory_girl!
+  jdbc-sqlite3
+  mocha (>= 0.12.8)
+  rspec (~> 2.12.0)
+  simplecov
+  sqlite3 (~> 1.3.10)
+  timecop
+  yard
+
+BUNDLED WITH
+   1.11.2
diff --git a/lib/factory_girl/strategy/stub.rb b/lib/factory_girl/strategy/stub.rb
index 19d9dc1..0c428fb 100644
--- a/lib/factory_girl/strategy/stub.rb
+++ b/lib/factory_girl/strategy/stub.rb
@@ -55,6 +55,14 @@ module FactoryGirl
           def update_column(*args)
             raise "stubbed models are not allowed to access the database - #{self.class.to_s}#update_column(#{args.join(",")})"
           end
+
+          def increment!(*args)
+            raise "stubbed models are not allowed to access the database - #{self.class}#increment!(#{args.join(',')})"
+          end
+
+          def decrement!(*args)
+            raise "stubbed models are not allowed to access the database - #{self.class}#decrement!(#{args.join(',')})"
+          end
         end
 
         created_at_missing_default = result_instance.respond_to?(:created_at) && !result_instance.created_at
diff --git a/spec/acceptance/build_stubbed_spec.rb b/spec/acceptance/build_stubbed_spec.rb
index c78f456..41a860e 100644
--- a/spec/acceptance/build_stubbed_spec.rb
+++ b/spec/acceptance/build_stubbed_spec.rb
@@ -74,6 +74,10 @@ describe "a generated stub instance" do
   it "disables increment" do
     expect { subject.increment!(:age) }.to raise_error(RuntimeError)
   end
+
+  it "disables decrement" do
+    expect { subject.decrement!(:age) }.to raise_error(RuntimeError)
+  end
 end
 
 describe "calling `build_stubbed` with a block" do