diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..24ba9a3
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+2.7.0
diff --git a/Gemfile.lock b/Gemfile.lock
index e70e0bd..b3ec428 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,63 +7,67 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.7.0)
+    addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
-    ast (2.4.0)
-    crack (0.4.3)
-      safe_yaml (~> 1.0.0)
-    diff-lcs (1.3)
-    hashdiff (1.0.0)
-    jaro_winkler (1.5.3)
-    json (2.2.0)
+    ast (2.4.2)
+    crack (0.4.5)
+      rexml
+    diff-lcs (1.4.4)
+    hashdiff (1.0.1)
+    json (2.5.1)
     mixlib-cli (1.7.0)
-    parallel (1.17.0)
-    parser (2.6.4.0)
-      ast (~> 2.4.0)
-    public_suffix (4.0.1)
+    parallel (1.20.1)
+    parser (3.0.2.0)
+      ast (~> 2.4.1)
+    public_suffix (4.0.6)
     rainbow (3.0.0)
-    rake (10.5.0)
-    rspec (3.8.0)
-      rspec-core (~> 3.8.0)
-      rspec-expectations (~> 3.8.0)
-      rspec-mocks (~> 3.8.0)
-    rspec-core (3.8.2)
-      rspec-support (~> 3.8.0)
-    rspec-expectations (3.8.4)
+    rake (13.0.6)
+    regexp_parser (2.1.1)
+    rexml (3.2.5)
+    rspec (3.10.0)
+      rspec-core (~> 3.10.0)
+      rspec-expectations (~> 3.10.0)
+      rspec-mocks (~> 3.10.0)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-mocks (3.8.1)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.2)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-support (3.8.2)
-    rubocop (0.74.0)
-      jaro_winkler (~> 1.5.1)
+      rspec-support (~> 3.10.0)
+    rspec-support (3.10.2)
+    rubocop (0.93.1)
       parallel (~> 1.10)
-      parser (>= 2.6)
+      parser (>= 2.7.1.5)
       rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8)
+      rexml
+      rubocop-ast (>= 0.6.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 1.7)
-    ruby-progressbar (1.10.1)
-    safe_yaml (1.0.5)
+      unicode-display_width (>= 1.4.0, < 2.0)
+    rubocop-ast (1.8.0)
+      parser (>= 3.0.1.1)
+    ruby-progressbar (1.11.0)
     sensu-plugin (2.7.1)
       json (< 3.0.0)
       mixlib-cli (~> 1.5)
-    unicode-display_width (1.6.0)
-    webmock (3.7.2)
+    unicode-display_width (1.7.0)
+    webmock (3.13.0)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
 
 PLATFORMS
-  ruby
+  x86_64-linux
 
 DEPENDENCIES
-  bundler (~> 1.11)
-  rake (~> 10.0)
-  rspec (~> 3.7)
+  bundler (~> 2.2)
+  rake (~> 13.0)
+  rspec (~> 3.10)
   rubocop (~> 0.54)
   sensu-plugins-minio!
   webmock (~> 3.3)
 
 BUNDLED WITH
-   1.16.1
+   2.2.23
diff --git a/bin/check-minio-update.rb b/bin/check-minio-update.rb
index 6ae3434..a87109d 100755
--- a/bin/check-minio-update.rb
+++ b/bin/check-minio-update.rb
@@ -73,7 +73,7 @@ def get_latest_version(checkurl, platform)
   end
 
   def get_local_version
-    stdout, stderr, status = Open3.capture3('minio --version', unsetenv_others: true)
+    stdout, stderr, status = Open3.capture3([{'PATH' => ENV['PATH']}, 'minio --version', :unsetenv_others => true])
 
     raise IOError, "Unable to gather local minio version: #{stderr}" unless status.success?
 
diff --git a/sensu-plugins-minio.gemspec b/sensu-plugins-minio.gemspec
index fcc08c3..d452565 100644
--- a/sensu-plugins-minio.gemspec
+++ b/sensu-plugins-minio.gemspec
@@ -22,9 +22,9 @@ Gem::Specification.new do |spec|
   end
 
   spec.add_dependency 'sensu-plugin', '~> 2.1'
-  spec.add_development_dependency 'bundler', '~> 1.11'
-  spec.add_development_dependency 'rake', '~> 10.0'
-  spec.add_development_dependency 'rspec', '~> 3.7'
+  spec.add_development_dependency 'bundler', '~> 2.2'
+  spec.add_development_dependency 'rake', '~> 13.0'
+  spec.add_development_dependency 'rspec', '~> 3.10'
   spec.add_development_dependency 'rubocop', '~> 0.54'
   spec.add_development_dependency 'webmock', '~> 3.3'
 end
diff --git a/spec/check-minio-update_spec.rb b/spec/check-minio-update_spec.rb
index b20cd2d..2b64be8 100644
--- a/spec/check-minio-update_spec.rb
+++ b/spec/check-minio-update_spec.rb
@@ -1,83 +1,97 @@
 # frozen_string_literal: true
 
-require 'json'
 require 'webmock/rspec'
+require_relative '../bin/check-minio-update'
 
-require_relative '../bin/check-minio-update.rb'
+CheckMinioUpdate.class_variable_set(:@@autorun, false)
 
 describe CheckMinioUpdate do
-  let(:status) { double }
-  local_version_return = "Version: 2019-09-05T23:24:38Z\nRelease-Tag: RELEASE.2019-09-05T23-24-38Z\nCommit-ID: b52a3e523cc3c4debc0ea2f86386377df5355c81"
-  latest_version_return = [body: '65a735f04bc1d35b4f86418226d5bbb4895cf7e1 minio.RELEASE.2019-09-05T23-24-38Z', status: 200]
-
-  before :context do
-    CheckMinioUpdate.class_variable_set(:@@autorun, false)
+  before do
+    stub_checksum_request
+    allow(check).to(receive(:output))
+    allow(Open3).to(receive(:capture3).with(array_including('minio --version'))
+                                      .and_return([stdout, stderr, double(:success? => success)]))
   end
 
-  before(:each) do
-    @api = stub_request(
+  let(:checksum_request) do
+    stub_request(
       :get,
       'https://dl.min.io/server/minio/release/linux-amd64/minio.shasum'
-    )
+    ).to_return(response)
+  end
 
-    @check = CheckMinioUpdate.new
-    @check.config[:checkurl] = 'https://dl.min.io/server/minio/release'
-    @check.config[:platform] = 'linux-amd64'
+  let(:response) do
+    { body: '285ec90006a6961ebcb7dd9685acc0ebcd08f561 minio.RELEASE.2021-07-08T19-43-25Z', status: 200 }
+  end
 
-    allow(@check).to receive(:output)
+  alias_method :stub_checksum_request, :checksum_request
+
+  let(:check) do
+    CheckMinioUpdate.new.tap do |check|
+      check.config[:checkurl] = 'https://dl.min.io/server/minio/release'
+      check.config[:platform] = 'linux-amd64'
+    end
   end
 
-  it 'should be ok if versions are equal' do
-    @api.to_return(latest_version_return)
-    allow(status).to receive(:success?).and_return(true)
-    allow(Open3).to receive(:capture3).with('minio').and_return([local_version_return, nil, status])
+  let(:stdout) { 'minio version RELEASE.2021-07-08T19-43-25Z' }
+  let(:stderr) { nil }
+  let(:success) { true }
 
-    expect { @check.run }.to raise_error do |error|
-      expect(error).to be_a SystemExit
-      expect(error.status).to eq 0
+  context 'with matching local and remote version' do
+    it 'should be ok if versions are equal' do
+      expect { check.run }.to raise_error do |error|
+        expect(error).to be_a SystemExit
+        expect(error.status).to eq 0
+      end
+
+      expect(check).to have_received(:output).with('No new minio version available')
+      expect(checksum_request).to have_been_requested
     end
-    expect(@check).to have_received(:output).with('No new minio version available')
-    expect(@api).to have_been_requested
   end
 
-  it 'should be critical if versions differ' do
-    latest_version_return_diff = [body: '65a735f04bc1d35b4f86418226d5bbb4895cf7e1 minio.RELEASE.2019-09-11T19-53-16Z', status: 200]
-    @api.to_return(latest_version_return_diff)
-    allow(status).to receive(:success?).and_return(true)
-    allow(Open3).to receive(:capture3).with('minio').and_return([local_version_return, nil, status])
+  context 'with different local and remote versions' do
+    let(:response) do
+      { body: '285ec90006a6961ebcb7dd9685acc0ebcd08f561 minio.RELEASE.2022-07-08T19-43-25Z', status: 200 }
+    end
+
+    it 'should be critical' do
+      expect { check.run }.to raise_error do |error|
+        expect(error).to be_a SystemExit
+        expect(error.status).to eq 2
+      end
 
-    expect { @check.run }.to raise_error do |error|
-      expect(error).to be_a SystemExit
-      expect(error.status).to eq 2
+      expect(check).to have_received(:output).with('New minio version available RELEASE.2022-07-08T19-43-25Z')
+      expect(checksum_request).to have_been_requested
     end
-    expect(@check).to have_received(:output).with('New minio version available RELEASE.2019-09-11T19-53-16Z')
-    expect(@api).to have_been_requested
   end
 
-  it 'should be unknown if minio not found' do
-    @api.to_return(latest_version_return)
-    allow(status).to receive(:success?).and_return(false)
-    allow(Open3).to receive(:capture3).with('minio').and_return([nil, 'Minio not found', status])
+  context 'with unknown local version' do
+    let(:stdout) { nil }
+    let(:stderr) { 'Minio not found' }
+    let(:success) { false }
 
-    expect { @check.run }.to raise_error do |error|
-      expect(error).to be_a SystemExit
-      expect(error.status).to eq 3
+    it 'should be unknown' do
+      expect { check.run }.to raise_error do |error|
+        expect(error).to be_a SystemExit
+        expect(error.status).to eq 3
+      end
+
+      expect(check).to have_received(:output).with('Unable to gather local minio version: Minio not found')
+      expect(checksum_request).to have_been_requested
     end
-    expect(@check).to have_received(:output).with('Unable to gather local minio version: Minio not found')
-    expect(@api).to have_been_requested
   end
 
-  it 'should be unknown if release url changes ' do
-    not_found = [body: '404 Not Found', status: 404]
-    @api.to_return(not_found)
-    allow(status).to receive(:success?).and_return(false)
-    allow(Open3).to receive(:capture3).with('minio').and_return([local_version_return, nil, status])
+  context 'with release url not found' do ||
+    let(:response) { { body: '404 Not Found', status: 404 } }
+
+    it 'should be unknown' do
+      expect { check.run }.to raise_error do |error|
+        expect(error).to be_a SystemExit
+        expect(error.status).to eq 3
+      end
 
-    expect { @check.run }.to raise_error do |error|
-      expect(error).to be_a SystemExit
-      expect(error.status).to eq 3
+      expect(check).to have_received(:output).with('Unable to gather latest minio version: 404 Not Found')
+      expect(checksum_request).to have_been_requested
     end
-    expect(@check).to have_received(:output).with('Unable to gather latest minio version: 404 Not Found')
-    expect(@api).to have_been_requested
   end
 end