diff --git a/.circleci/config.yml b/.circleci/config.yml
index b7c1f81..b8fd177 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -4,7 +4,7 @@ jobs:
   build:
     working_directory: ~/tika
     docker:
-      - image: circleci/ruby:2.3.7-browsers
+      - image: circleci/ruby:2.7.5-browsers
         environment:
           RAILS_ENV: test
     steps:
@@ -27,7 +27,7 @@ jobs:
   test:
     working_directory: ~/tika
     docker:
-      - image: circleci/ruby:2.3.7-browsers
+      - image: circleci/ruby:2.7.5-browsers
         environment:
           RAILS_ENV: test
     steps:
@@ -39,7 +39,7 @@ jobs:
   rubocop:
     working_directory: ~/tika
     docker:
-      - image: circleci/ruby:2.3.7-browsers
+      - image: circleci/ruby:2.7.5-browsers
         environment:
           RAILS_ENV: test
     steps:
@@ -56,14 +56,3 @@ workflows:
       - test:
           requires:
             - build
-      - rubocop:
-          requires:
-            - build
-    jobs:
-      - build
-      - test:
-          requires:
-            - build
-      - rubocop:
-          requires:
-            - build
diff --git a/.rubocop.yml b/.rubocop.yml
index 42f8c84..5f29edf 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,10 +1,13 @@
 AllCops:
   DisplayCopNames: true
-  TargetRubyVersion: 2.3
+  TargetRubyVersion: 2.7
   Exclude:
     - 'ext/*'
     - 'vendor/**/*'
 
+Lint/MissingSuper:
+  Enabled: false
+
 Metrics/AbcSize:
   Enabled: true
   Max: 28
@@ -23,5 +26,6 @@ Metrics/MethodLength:
 
 Style/Documentation:
   Enabled: false
-  Exclude:
-    - 'spec/**/*'
+
+Style/NumericPredicate:
+  Enabled: false
diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 0000000..dbec821
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1,5 @@
+ruby 2.7.5
+nodejs 16.15.0
+java zulu-8.56.0.21
+python 3.9.0
+yarn 1.22.10
diff --git a/README.md b/README.md
index f9d6bb8..953200e 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,6 @@ Ruby Tika Parser
 ======
 
 [![CircleCI](https://circleci.com/gh/pulibrary/ruby_tika_app.svg?style=svg)](https://circleci.com/gh/pulibrary/ruby_tika_app)
-[![Coverage Status](https://coveralls.io/repos/github/pulibrary/ruby_tika_app/badge.svg)](https://coveralls.io/github/pulibrary/ruby_tika_app)
 
 ### Introduction
 
diff --git a/ext/tika-app-1.18.jar b/ext/tika-app-1.24.1.jar
similarity index 77%
rename from ext/tika-app-1.18.jar
rename to ext/tika-app-1.24.1.jar
index 430d2c1..bb0edab 100644
Binary files a/ext/tika-app-1.18.jar and b/ext/tika-app-1.24.1.jar differ
diff --git a/ext/tika-config.xml b/ext/tika-config.xml
index 0616c33..6b2990d 100644
--- a/ext/tika-config.xml
+++ b/ext/tika-config.xml
@@ -1,4 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <properties>
   <service-loader initializableProblemHandler="ignore"/>
+  <parsers>
+    <!-- Default Parser for most things, except for 2 mime types, and never
+         use the Executable Parser -->
+    <parser class="org.apache.tika.parser.DefaultParser">
+      <mime-exclude>image/jpeg</mime-exclude>
+      <mime-exclude>application/x-sqlite3</mime-exclude>
+      <parser-exclude class="org.apache.tika.parser.jdbc.SQLite3Parser"/>
+    </parser>
+  </parsers>
 </properties>
diff --git a/lib/ruby_tika_app.rb b/lib/ruby_tika_app.rb
index 810033d..60230ce 100644
--- a/lib/ruby_tika_app.rb
+++ b/lib/ruby_tika_app.rb
@@ -1,15 +1,19 @@
 # frozen_string_literal: true
 
 # Based on the rake remote task code
+
 require 'rubygems'
 require 'stringio'
 require 'open4'
 
 class RubyTikaApp
+  TIKA_APP_VERSION = '1.24.1'
+
   class Error < RuntimeError; end
 
   class CommandFailedError < Error
     attr_reader :status
+
     def initialize(status)
       @status = status
     end
@@ -17,11 +21,19 @@ def initialize(status)
 
   def initialize(document, config = nil)
     @config = config
-    @document = if document =~ %r{https?:\/\/[\S]+}
+    @document = if (document =~ %r{https?://\S+}) == 0
                   document
                 else
                   "file://#{document}"
                 end
+
+    java_cmd = 'java'
+    java_args = '-server -Djava.awt.headless=true -Dfile.encoding=UTF-8'
+    ext_dir = File.join(File.dirname(__FILE__))
+    tika_path = "#{ext_dir}/../ext/tika-app-#{TIKA_APP_VERSION}.jar"
+    tika_config_path = @config || File.join(File.dirname(__FILE__), '..', 'ext', 'tika-config.xml')
+
+    @tika_cmd = "#{java_cmd} #{java_args} -jar '#{tika_path}' --config='#{tika_config_path}'"
   end
 
   def to_xml
@@ -32,7 +44,7 @@ def to_html
     run_tika('--html')
   end
 
-  def to_json
+  def to_json(*_args)
     run_tika('--json')
   end
 
@@ -50,23 +62,15 @@ def to_metadata
 
   private
 
-  def java_args
-    '-server -Djava.awt.headless=true'
-  end
-
-  def java_cmd
-    'java'
-  end
-
   def run_tika(option)
-    final_cmd = "#{tika_cmd} #{option} '#{@document}'"
+    final_cmd = "#{@tika_cmd} #{option} '#{@document}'"
 
-    _pid, stdin, stdout, stderr = Open4.popen4(final_cmd)
+    _, stdin, stdout, stderr = Open4.popen4(final_cmd)
 
     stdout_result = stdout.read.strip
     stderr_result = stderr.read.strip
 
-    unless strip_stderr(stderr_result).empty?
+    if stdout_result.empty? && !stderr_result.empty?
       raise(CommandFailedError.new(stderr_result),
             "execution failed with status #{stderr_result}: #{final_cmd}")
     end
@@ -77,26 +81,4 @@ def run_tika(option)
     stdout.close
     stderr.close
   end
-
-  def strip_stderr(error_message)
-    errors = error_message.split("\n")
-    real_errors = errors.reject { |error| error =~ /(INFO|WARN)/ }
-    real_errors.empty? ? real_errors : real_errors.join("\n")
-  end
-
-  def tika_cmd
-    "#{java_cmd} #{java_args} -jar '#{tika_path}' #{tika_config}"
-  end
-
-  def tika_config
-    "--config=#{tika_config_path}"
-  end
-
-  def tika_config_path
-    @config || File.join(File.dirname(__FILE__), '..', 'ext', 'tika-config.xml')
-  end
-
-  def tika_path
-    File.join(File.dirname(__FILE__), '..', 'ext', 'tika-app-1.18.jar')
-  end
 end
diff --git a/ruby_tika_app.gemspec b/ruby_tika_app.gemspec
index 8f1ac4a..6033f25 100644
--- a/ruby_tika_app.gemspec
+++ b/ruby_tika_app.gemspec
@@ -21,14 +21,14 @@ Gem::Specification.new do |s|
   s.require_paths = %w[lib]
 
   s.add_runtime_dependency 'open4'
+  s.required_ruby_version = '>= 2.7'
 
   s.add_development_dependency 'bundler', '>= 1.0.15'
-  s.add_development_dependency 'coveralls'
   s.add_development_dependency 'json'
   s.add_development_dependency 'pry'
   s.add_development_dependency 'rake'
-  s.add_development_dependency 'rspec', '~> 3.3.0'
+  s.add_development_dependency 'rspec', '~> 3.9.0'
   s.add_development_dependency 'rubocop'
   s.add_development_dependency 'simplecov'
-  s.add_development_dependency 'stub_server'
+  s.add_development_dependency 'thin'
 end
diff --git a/spec/ruby_tika_app_spec.rb b/spec/ruby_tika_app_spec.rb
index de6ec8f..7455dae 100644
--- a/spec/ruby_tika_app_spec.rb
+++ b/spec/ruby_tika_app_spec.rb
@@ -1,11 +1,16 @@
 # frozen_string_literal: true
 
 require 'spec_helper'
-require 'stub_server'
 
 describe RubyTikaApp do
-  let(:doc_path) { File.join(File.dirname(__FILE__), 'docs') }
-  let(:test_file) { "#{doc_path}/graph sampling simplex - 11.pdf" }
+  before(:each) do
+    doc_path = "#{File.join(File.dirname(__FILE__))}/docs"
+
+    @test_file = "#{doc_path}/graph sampling simplex - 11.pdf"
+
+    @cnn_com_file = "#{doc_path}/cnn.com"
+    @news_ycombinator_com_file = "#{doc_path}/news.ycombinator.com"
+  end
 
   describe 'Error' do
     it 'has an error' do
@@ -16,111 +21,102 @@
     end
   end
 
+  describe 'CommandFailedError' do
+    it 'is raised correctly' do
+      expect do
+        rta = RubyTikaApp.new('/file_not_found.pdf')
+        rta.to_text
+      end.to raise_error(RubyTikaApp::CommandFailedError)
+    end
+  end
+
   describe '#to_xml' do
     it 'header' do
-      rta = RubyTikaApp.new(test_file)
+      rta = RubyTikaApp.new(@test_file)
       expect(rta.to_xml[0..37]).to eq('<?xml version="1.0" encoding="UTF-8"?>')
     end
 
     it 'middle' do
-      rta = RubyTikaApp.new(test_file)
+      rta = RubyTikaApp.new(@test_file)
       xml = rta.to_xml
 
       xml_size = xml.size / 2
 
-      expect(xml[xml_size..(xml_size + 100)]).to eq("d in Frontier Sampling (FS).\nSince this is the only difference between MHRW and USDSG,\nto be simple, ")
+      expect(xml[xml_size..(xml_size + 100)]).to eq("pply USDSG, we\nneed to change a directed graph Gd to a symmetric graph\nG. This methodology is also us")
     end
   end
 
   describe '#to_html' do
     it 'header' do
-      rta = RubyTikaApp.new(test_file)
+      rta = RubyTikaApp.new(@test_file)
       expect(rta.to_html[0..42]).to eq('<html xmlns="http://www.w3.org/1999/xhtml">')
     end
 
     it 'middle' do
-      rta = RubyTikaApp.new(test_file)
-      expect(rta.to_html[1000...1100]).to eq("Z\"/>\n<meta name=\"meta:save-date\" content=\"2011-03-29T13:00:16Z\"/>\n<meta name=\"pdf:encrypted\" content")
+      rta = RubyTikaApp.new(@test_file)
+      expect(rta.to_html[1000...1100]).to eq("nfo:modified\" content=\"2011-03-29T13:00:16Z\"/>\n<meta name=\"meta:save-date\" content=\"2011-03-29T13:00")
     end
   end
 
   describe '#to_json' do
     it 'header' do
-      rta = RubyTikaApp.new(test_file)
+      rta = RubyTikaApp.new(@test_file)
       expect(rta.to_json[0..42]).to eq('{"Application":"\\u0027Certified by IEEE PDF')
     end
 
     it 'middle' do
-      rta = RubyTikaApp.new(test_file)
+      rta = RubyTikaApp.new(@test_file)
       expect(rta.to_json[100...150]).to eq('"171510","Content-Type":"application/pdf","Creatio')
     end
   end
 
   describe '#to_text' do
     it 'header' do
-      rta = RubyTikaApp.new(test_file)
+      rta = RubyTikaApp.new(@test_file)
       expect(rta.to_text[0..42]).to eq("Understanding Graph Sampling Algorithms\nfor")
     end
 
     it 'middle' do
-      rta = RubyTikaApp.new(test_file)
+      rta = RubyTikaApp.new(@test_file)
       expect(rta.to_text[100...150]).to eq("in Zhang3, Tianyin Xu2\n\nLong Jin1, Pan Hui4, Beixi")
     end
   end
 
   describe '#to_text_main' do
     it 'header' do
-      rta = RubyTikaApp.new(test_file)
+      rta = RubyTikaApp.new(@test_file)
       expect(rta.to_text_main[0..42]).to eq('Understanding Graph Sampling Algorithms for')
     end
 
     it 'middle' do
-      rta = RubyTikaApp.new(test_file)
+      rta = RubyTikaApp.new(@test_file)
       expect(rta.to_text_main[100...150]).to eq("n Zhang3, Tianyin Xu2\nLong Jin1, Pan Hui4, Beixing")
     end
   end
 
   describe '#to_metadata' do
     it 'header' do
-      rta = RubyTikaApp.new(test_file)
+      rta = RubyTikaApp.new(@test_file)
       expect(rta.to_metadata[0..42]).to eq("Application: 'Certified by IEEE PDFeXpress ")
     end
 
     it 'middle' do
-      rta = RubyTikaApp.new(test_file)
+      rta = RubyTikaApp.new(@test_file)
       expect(rta.to_metadata[100...150]).to eq("Type: application/pdf\nCreation-Date: 2011-03-29T12")
     end
   end
 
   describe 'external URLs' do
-    let(:port) { 9123 }
-
-    context 'with a link to cnn.com' do
-      let(:document) { File.read("#{doc_path}/cnn.com") }
-      let(:replies) { { '/cnn.com' => [200, {}, [document]] } }
-
-      it 'parses the url' do
-        StubServer.open(port, replies) do |server|
-          server.wait
-          rta = RubyTikaApp.new("http://localhost:#{port}/cnn.com")
-          expect(rta.to_text).to_not be_nil
-          expect(rta.to_text).to eq(RubyTikaApp.new("#{doc_path}/cnn.com").to_text)
-        end
-      end
-    end
-
-    context 'with a link to ycombinator.com' do
-      let(:document) { File.read("#{doc_path}/news.ycombinator.com") }
-      let(:replies) { { '/news.ycombinator.com' => [200, {}, [document]] } }
-
-      it 'parses the url' do
-        StubServer.open(port, replies) do |server|
-          server.wait
-          rta = RubyTikaApp.new("http://localhost:#{port}/news.ycombinator.com")
-          expect(rta.to_text).to_not be_nil
-          expect(rta.to_text).to eq(RubyTikaApp.new("#{doc_path}/news.ycombinator.com").to_text)
-        end
-      end
+    it 'should be able to parse an http url' do
+      rta = RubyTikaApp.new('http://localhost:9299/cnn.com')
+      expect(rta.to_text).to_not be_nil
+      expect(rta.to_text).to eq(RubyTikaApp.new(@cnn_com_file).to_text)
+    end
+
+    it 'should be able to parse another http url' do
+      rta = RubyTikaApp.new('http://localhost:9299/news.ycombinator.com')
+      expect(rta.to_text).to_not be_nil
+      expect(rta.to_text).to eq(RubyTikaApp.new(@news_ycombinator_com_file).to_text)
     end
   end
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 015b313..8014673 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,16 +1,11 @@
 # frozen_string_literal: true
 
 require 'simplecov'
-require 'coveralls'
 
-SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter.new(
-  [
-    SimpleCov::Formatter::HTMLFormatter,
-    Coveralls::SimpleCov::Formatter
-  ]
-)
+SimpleCov.formatter = SimpleCov::Formatter::HTMLFormatter
 SimpleCov.start do
   add_filter '/spec'
+  minimum_coverage 100
 end
 
 require 'rubygems'
@@ -18,3 +13,13 @@
 
 require 'ruby_tika_app'
 require 'rspec'
+
+# Include all files under spec/support
+Dir['./spec/support/**/*.rb'].sort.each { |f| require f }
+
+# Start a local rack server to serve up test pages.
+@server_thread = Thread.new do
+  Rack::Handler::Thin.run(MyApp::Test::Server.new, Port: 9299, Host: '127.0.0.1')
+end
+
+sleep(1) # wait a sec for the server to be booted
diff --git a/spec/support/test_server.rb b/spec/support/test_server.rb
new file mode 100644
index 0000000..6b588a3
--- /dev/null
+++ b/spec/support/test_server.rb
@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+require 'rubygems'
+require 'rack'
+
+module MyApp
+  module Test
+    class Server
+      def call(env)
+        @root = "#{__dir__}/../docs/"
+        path = Rack::Utils.unescape(env['PATH_INFO'])
+        path += 'index.html' if path == '/'
+        file = @root + path.to_s
+
+        if File.exist?(file)
+          [200, { 'Content-Type' => 'text/html' }, File.read(file)]
+        else
+          [404, { 'Content-Type' => 'text/plain' }, 'file not found']
+        end
+      end
+    end
+  end
+end