diff --git a/.github/workflows/actions.yml b/.github/workflows/actions.yml
index 0b291e4d..c9809188 100644
--- a/.github/workflows/actions.yml
+++ b/.github/workflows/actions.yml
@@ -8,33 +8,46 @@ on:
       - main
 
 jobs:
-  main:
-    name: ruby
+  tests:
     runs-on: ubuntu-latest
     strategy:
+      fail-fast: false
       matrix:
-        ruby-version: [3.0.4, 2.7.5, 2.6.10]
+        ruby-version:
+          - '2.7'
+          - '3.0'
+          - '3.1'
+          - '3.2'
     steps:
       - uses: zendesk/checkout@v3
       - uses: zendesk/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby-version }}
-      - name: Vendor Cache
-        id: vendor-cache
-        uses: zendesk/cache@v3
+          bundler-cache: true
+      - name: test
+        run: bundle exec rake
+
+  linter:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: zendesk/checkout@v3
+      - uses: zendesk/setup-ruby@v1
         with:
-          path: vendor/cache
-          key: ${{ runner.os }}-vendor-ruby-${{ matrix.ruby-version }}-lock-${{ hashFiles('Gemfile.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-vendor-ruby-${{ matrix.ruby-version }}-
-            ${{ runner.os }}-vendor-
-      - name: before_script
-        run: |
-          bundle config set --local path 'vendor/cache'
-          bundle install --jobs=3 --retry=3
-      - name: build
-        run: |
-          bundle exec rake
+          bundler-cache: true
       - name: lint
-        run: |
-          bundle exec rubocop
+        run: bundle exec rubocop
+
+  tests_successful:
+    name: Tests passing?
+    needs: tests
+    if: always()
+    runs-on: ubuntu-latest
+    steps:
+      - run: |
+          if ${{ needs.tests.result == 'success' }}
+          then
+            echo "All tests pass"
+          else
+            echo "Some tests failed"
+            false
+          fi
diff --git a/.ruby-version b/.ruby-version
index a04abec9..6a81b4c8 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.6.10
+2.7.8
diff --git a/Gemfile.lock b/Gemfile.lock
index 414f593a..0daa4c5e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,9 +1,9 @@
 PATH
   remote: .
   specs:
-    zendesk_apps_support (4.38.3)
+    zendesk_apps_support (4.39.0)
       erubis
-      i18n
+      i18n (>= 1.7.1)
       image_size (~> 2.0.2)
       ipaddress_2 (~> 0.13.0)
       json
@@ -20,14 +20,14 @@ GEM
     ast (2.4.2)
     bump (0.5.4)
     byebug (9.0.6)
-    concurrent-ruby (1.1.8)
+    concurrent-ruby (1.2.2)
     crass (1.0.6)
-    diff-lcs (1.4.4)
+    diff-lcs (1.5.0)
     erubis (2.7.0)
-    faker (1.6.6)
-      i18n (~> 0.5)
+    faker (3.2.0)
+      i18n (>= 1.8.11, < 2)
     ffi (1.15.5)
-    i18n (0.9.5)
+    i18n (1.13.0)
       concurrent-ruby (~> 1.0)
     image_size (2.0.2)
     ipaddress_2 (0.13.0)
@@ -36,8 +36,8 @@ GEM
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     marcel (1.0.2)
-    mini_portile2 (2.8.1)
-    nokogiri (1.13.10)
+    mini_portile2 (2.8.2)
+    nokogiri (1.14.3)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     parallel (1.12.1)
@@ -51,19 +51,19 @@ GEM
       ffi (>= 0.5.0, < 2)
     regexp_parser (2.1.1)
     rexml (3.2.5)
-    rspec (3.4.0)
-      rspec-core (~> 3.4.0)
-      rspec-expectations (~> 3.4.0)
-      rspec-mocks (~> 3.4.0)
-    rspec-core (3.4.4)
-      rspec-support (~> 3.4.0)
-    rspec-expectations (3.4.0)
+    rspec (3.12.0)
+      rspec-core (~> 3.12.0)
+      rspec-expectations (~> 3.12.0)
+      rspec-mocks (~> 3.12.0)
+    rspec-core (3.12.2)
+      rspec-support (~> 3.12.0)
+    rspec-expectations (3.12.3)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.4.0)
-    rspec-mocks (3.4.1)
+      rspec-support (~> 3.12.0)
+    rspec-mocks (3.12.5)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.4.0)
-    rspec-support (3.4.1)
+      rspec-support (~> 3.12.0)
+    rspec-support (3.12.0)
     rubocop (1.20.0)
       parallel (~> 1.10)
       parser (>= 3.0.0.0)
@@ -92,12 +92,12 @@ DEPENDENCIES
   bump (~> 0.5.1)
   bundler (~> 2.2)
   byebug (~> 9.0.6)
-  faker (~> 1.6.6)
+  faker
   parallel (= 1.12.1)
   rake
-  rspec (~> 3.4.0)
+  rspec
   rubocop
   zendesk_apps_support!
 
 BUNDLED WITH
-   2.3.26
+   2.4.12
diff --git a/lib/zendesk_apps_support/i18n.rb b/lib/zendesk_apps_support/i18n.rb
index c19c1443..4a4900bb 100644
--- a/lib/zendesk_apps_support/i18n.rb
+++ b/lib/zendesk_apps_support/i18n.rb
@@ -3,8 +3,8 @@
 module ZendeskAppsSupport
   module I18n
     class << self
-      def t(key, *args)
-        i18n.t(key, *args)
+      def t(key, **args)
+        i18n.t(key, **args)
       end
 
       def set_load_path
diff --git a/lib/zendesk_apps_support/manifest/no_override_hash.rb b/lib/zendesk_apps_support/manifest/no_override_hash.rb
index b4c8e3e1..64bd4352 100644
--- a/lib/zendesk_apps_support/manifest/no_override_hash.rb
+++ b/lib/zendesk_apps_support/manifest/no_override_hash.rb
@@ -18,7 +18,7 @@ def message
 
           # if the error contains the word `_legacy` in the second sentence, let's
           # only use the first one.
-          if [original, attempted].any? { |val| val =~ /_legacy/ }
+          if [original, attempted].any? { |val| val.is_a?(String) && val =~ /_legacy/ }
             return translated_error
           end
           translated_detail_key = 'txt.apps.admin.error.app_build.duplicate_reference_values'
diff --git a/lib/zendesk_apps_support/validations/manifest.rb b/lib/zendesk_apps_support/validations/manifest.rb
index 41191344..1e5a611e 100644
--- a/lib/zendesk_apps_support/validations/manifest.rb
+++ b/lib/zendesk_apps_support/validations/manifest.rb
@@ -434,7 +434,8 @@ def no_template_format_error(manifest)
 
         def valid_url?(value)
           uri = URI.parse(value)
-          uri.is_a?(URI::HTTP) && !uri.host.nil?
+          host_empty = uri.host.nil? || uri.host == ''
+          uri.is_a?(URI::HTTP) && !host_empty
         rescue URI::InvalidURIError
           false
         end
diff --git a/lib/zendesk_apps_support/validations/validation_error.rb b/lib/zendesk_apps_support/validations/validation_error.rb
index 394bb7ca..797b2dbd 100644
--- a/lib/zendesk_apps_support/validations/validation_error.rb
+++ b/lib/zendesk_apps_support/validations/validation_error.rb
@@ -50,7 +50,7 @@ def initialize(key, data = nil)
       end
 
       def to_s
-        ZendeskAppsSupport::I18n.t("#{KEY_PREFIX}#{key}", data)
+        ZendeskAppsSupport::I18n.t("#{KEY_PREFIX}#{key}", **data)
       end
 
       def to_json(*)
diff --git a/spec/package_spec.rb b/spec/package_spec.rb
index 2ed7e398..34c29e3b 100644
--- a/spec/package_spec.rb
+++ b/spec/package_spec.rb
@@ -300,7 +300,7 @@ def build_app_source_with_files(files)
 
         it 'includes zh-cn in translations' do
           expected_translations = JSON.parse(File.read('spec/translations/zh-cn.json'))
-          expect(package.send(:translations)['zh-cn'].except('custom1')).to eq(expected_translations)
+          expect(I18n::Utils.except(package.send(:translations)['zh-cn'], 'custom1')).to eq(expected_translations)
         end
 
         it 'merges missing keys with the default locale' do
@@ -319,7 +319,7 @@ def build_app_source_with_files(files)
 
         it 'removes zendesk-specific keys in translations' do
           expected_translations = JSON.parse(File.read('spec/translations/zh-cn.json'))
-          expect(package.send(:translations)['zh-cn'].except('custom1')).to eq(expected_translations)
+          expect(I18n::Utils.except(package.send(:translations)['zh-cn'], 'custom1')).to eq(expected_translations)
         end
 
         it 'merges missing keys with the default locale' do
diff --git a/spec/validations/validation_serialization_spec.rb b/spec/validations/validation_serialization_spec.rb
index faa17dcf..b5c21ee7 100644
--- a/spec/validations/validation_serialization_spec.rb
+++ b/spec/validations/validation_serialization_spec.rb
@@ -65,7 +65,7 @@
 
   describe '.from_json' do
     it 'decodes a JSON hash and passes it to .from_hash' do
-      expect(ValidationError).to receive(:from_hash).with('foo' => 'bar')
+      expect(ValidationError).to receive(:from_hash).with({ 'foo' => 'bar' })
       ValidationError.from_json(JSON.generate('foo' => 'bar'))
     end
 
diff --git a/zendesk_apps_support.gemspec b/zendesk_apps_support.gemspec
index 56d544f5..24df4f66 100644
--- a/zendesk_apps_support.gemspec
+++ b/zendesk_apps_support.gemspec
@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |s|
   s.name        = 'zendesk_apps_support'
-  s.version     = '4.38.3'
+  s.version     = '4.39.0'
   s.license     = 'Apache License Version 2.0'
   s.authors     = ['James A. Rosen', 'Likun Liu', 'Sean Caffery', 'Daniel Ribeiro']
   s.email       = ['dev@zendesk.com']
@@ -10,10 +10,10 @@ Gem::Specification.new do |s|
   s.summary     = 'Support to help you develop Zendesk Apps.'
   s.description = s.summary
 
-  s.required_ruby_version = Gem::Requirement.new('>= 2.6', '< 3.1')
+  s.required_ruby_version = Gem::Requirement.new('>= 2.7')
   s.required_rubygems_version = '>= 1.3.6'
 
-  s.add_runtime_dependency 'i18n'
+  s.add_runtime_dependency 'i18n', '>= 1.7.1'
   s.add_runtime_dependency 'sassc'
   s.add_runtime_dependency 'sass' # remove explicit dependency when all compilation uses SassC
   s.add_runtime_dependency 'json'
@@ -24,9 +24,9 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'rb-inotify', '0.9.10'
   s.add_runtime_dependency 'marcel'
   s.add_runtime_dependency 'ipaddress_2', '~> 0.13.0'
-  s.add_development_dependency 'rspec', '~> 3.4.0'
+  s.add_development_dependency 'rspec'
   s.add_development_dependency 'bump', '~> 0.5.1'
-  s.add_development_dependency 'faker', '~> 1.6.6'
+  s.add_development_dependency 'faker'
   s.add_development_dependency 'rubocop'
   s.add_development_dependency 'byebug', '~> 9.0.6'
   s.add_development_dependency 'bundler', '~> 2.2'