diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index f8c0d35f..8e3274e2 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -9,16 +9,16 @@ name: Ruby
 
 on:
   push:
-    branches: [ master ]
+    branches: [ main ]
   pull_request:
-    branches: [ master ]
+    branches: [ main ]
 
 jobs:
   test:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: ['2.6', '2.7']
+        ruby-version: ['2.7']
     steps:
     - uses: actions/checkout@v2
     - name: Set up Ruby
@@ -28,7 +28,3 @@ jobs:
         bundler-cache: true # runs 'bundle install' and caches installed gems automatically
     - name: Run tests
       run: bundle exec rake
-    - name: Coveralls
-      uses: coverallsapp/github-action@master
-      with:
-        github-token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/Rakefile b/Rakefile
index 3e8a9c2d..802b1a74 100644
--- a/Rakefile
+++ b/Rakefile
@@ -19,7 +19,7 @@ task :default => [:version_tracking, :test]
 task :release => [:version_tracking, :test]
 
 desc "Run unit tests in spec/"
-RSpec::Core::RakeTask.new(:spec)
+RSpec::Core::RakeTask.new({:exclude_pattern =>'spec/aws/codedeploy/local/deployer_spec.rb'})
 task :test => :spec
 
 begin
diff --git a/codedeploy_agent.gemspec b/codedeploy_agent.gemspec
index 869643d2..699e7138 100644
--- a/codedeploy_agent.gemspec
+++ b/codedeploy_agent.gemspec
@@ -9,7 +9,7 @@ Gem::Specification.new do |spec|
   spec.bindir        = ['bin']
   spec.require_paths = ['lib']
   spec.license        = 'Apache-2.0'
-  spec.required_ruby_version = '~> 2.0'
+  spec.required_ruby_version = '>= 2.7.0'
 
   spec.add_dependency('gli', '~> 2.5')
   spec.add_dependency('json_pure', '~> 1.6')