diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 6d718b6..2fdaf42 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -21,9 +21,9 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Setup Ruby
-      uses: ruby/setup-ruby@v1.152.0
+      uses: ruby/setup-ruby@v1.202.0
       with:
-        ruby-version: 3.1.4
+        ruby-version: 3.3.6
         bundler-cache: true
     - name: Install dependencies
       run: bundle install
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..97ceee1
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+3.1.5
\ No newline at end of file
diff --git a/jsonapi-matchers.gemspec b/jsonapi-matchers.gemspec
index 3d3c2c6..055ea60 100644
--- a/jsonapi-matchers.gemspec
+++ b/jsonapi-matchers.gemspec
@@ -18,14 +18,14 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.required_ruby_version = ">= 2.7.7"
+  spec.required_ruby_version = ">= 3.1.5"
 
-  spec.add_dependency "activesupport", ">= 4.0", "< 7.1"
+  spec.add_dependency "activesupport", ">= 7.0", "< 8"
   spec.add_dependency "awesome_print"
 
-  spec.add_development_dependency "bump", "~> 0.9.0"
+  spec.add_development_dependency "bump", "~> 0.10.0"
   spec.add_development_dependency "bundler"
-  spec.add_development_dependency "rake", "~> 13.0"
-  spec.add_development_dependency "rspec", "~> 3.0"
+  spec.add_development_dependency "rake", "~> 13.2"
+  spec.add_development_dependency "rspec", "~> 3.13"
   spec.add_development_dependency "pry"
 end
diff --git a/spec/jsonapi/attributes_included_spec.rb b/spec/jsonapi/attributes_included_spec.rb
index 76db731..c9ebdba 100644
--- a/spec/jsonapi/attributes_included_spec.rb
+++ b/spec/jsonapi/attributes_included_spec.rb
@@ -265,14 +265,14 @@
 
       describe 'with_record' do
         context 'record exists' do
-          let(:record) { OpenStruct.new(id: 'some-car-id') }
+          let(:record) { Struct.new(:id).new('some-car-id') }
 
           it 'matches' do
             expect(have_relationship(:car).with_record(record).matches?(target)).to be_truthy
           end
 
           context 'the record id is not a string' do
-            let(:record) { OpenStruct.new(id: 3) }
+            let(:record) { Struct.new(:id).new(3) }
 
             it 'matches' do
               expect(have_relationship(:bike).with_record(record).matches?(target)).to be_truthy
@@ -281,7 +281,7 @@
         end
 
         context 'record id does not match' do
-          let(:record) { OpenStruct.new(id: 'not-the-right-car-id') }
+          let(:record) { Struct.new(:id).new('not-the-right-car-id') }
 
           subject { have_relationship(:car).with_record(record) }
 
@@ -296,14 +296,14 @@
         end
 
         context 'relationship is array and it matches' do
-          let(:record) { OpenStruct.new(id: 'some-chair-id-1') }
+          let(:record) { Struct.new(:id).new('some-chair-id-1') }
 
           it 'matches' do
             expect(have_relationship(:chairs).with_record(record).matches?(target)).to be_truthy
           end
 
           context 'the record id is not a string' do
-            let(:record) { OpenStruct.new(id: 4) }
+            let(:record) { Struct.new(:id).new(4) }
 
             it 'matches' do
               expect(have_relationship(:telephones).with_record(record).matches?(target)).to be_truthy
@@ -312,7 +312,7 @@
         end
 
         context 'relationship is array and it does not match' do
-          let(:record) { OpenStruct.new(id: 'some-chair-id-3') }
+          let(:record) { Struct.new(:id).new('some-chair-id-3') }
 
           subject { have_relationship(:chairs).with_record(record) }
 
@@ -327,7 +327,7 @@
         end
 
         context 'relationship does not have an id attribute' do
-          let(:record) { OpenStruct.new(id: 'some-chair-id-1') }
+          let(:record) { Struct.new(:id).new('some-chair-id-1') }
 
           subject { have_relationship(:house).with_record(record) }
 
@@ -342,7 +342,7 @@
         end
 
         context 'relationship is nil' do
-          let(:record) { OpenStruct.new(id: 'some-chair-id-1') }
+          let(:record) { Struct.new(:id).new('some-chair-id-1') }
 
           subject { have_relationship(:plane).with_record(record) }
 
@@ -357,7 +357,7 @@
         end
 
         context 'relationship does not exist' do
-          let(:record) { OpenStruct.new(id: 'some-chair-id-1') }
+          let(:record) { Struct.new(:id).new('some-chair-id-1') }
 
           subject { have_relationship(:does_not_exist).with_record(record) }