diff --git a/jenkins_api_client.gemspec b/jenkins_api_client.gemspec
index 37061a61..f335b0bc 100644
--- a/jenkins_api_client.gemspec
+++ b/jenkins_api_client.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |s|
   s.files         = `git ls-files -z`.split("\x0").select { |f| f.match(%r{lib/|bin/|java_deps/|gemspec}) }
   s.require_paths = ['lib']
   s.homepage = 'https://github.com/arangamani/jenkins_api_client'
-  s.required_ruby_version = ::Gem::Requirement.new('~> 2.1')
+  s.required_ruby_version = ::Gem::Requirement.new(['>= 2.1', '< 4.0'])
   s.rubygems_version = "2.4.5.1"
   s.summary = "Jenkins JSON API Client"
   s.licenses = ["MIT"]
diff --git a/lib/jenkins_api_client/client.rb b/lib/jenkins_api_client/client.rb
index cee4c2cb..350e36c6 100644
--- a/lib/jenkins_api_client/client.rb
+++ b/lib/jenkins_api_client/client.rb
@@ -67,6 +67,9 @@ class Client
       "http_open_timeout",
       "http_read_timeout",
       "ssl",
+      "crt",
+      "key",
+      "verify_mode",
       "pkcs_file_path",
       "pass_phrase",
       "ca_file",
@@ -95,6 +98,10 @@ class Client
     # @option args [String] :proxy_protocol the proxy protocol ('socks' or 'http' (defaults to HTTP)
     # @option args [String] :jenkins_path ("/") the optional context path for Jenkins
     # @option args [Boolean] :ssl (false) indicates if Jenkins is accessible over HTTPS
+    # @option args [String] :crt path to the crt pem for authenticating with Jenkins. See :key options
+    # @option args [String] :key path to the key pem for authenticating with Jenkins. The Crt and Key files are usefull for authenticating with untrusted host
+    #   and would be set to http.key and http.crt
+    # @option args [String] :verify_mode one of OpenSSL::SSL::VERIFY_* or nil to leave for default values
     # @option args [String] :pkcs_file_path ("/") the optional context path for pfx or p12 binary certificate file
     # @option args [String] :pass_phrase password for pkcs_file_path certificate file
     # @option args [String] :ca_file the path to a PEM encoded file containing trusted certificates used to verify peer certificate
@@ -293,6 +300,26 @@ def get_artifact(job_name,filename)
       end
     end
 
+    # Connects to the server and downloads artifacts with a given path to a specified location
+    #
+    # @param [String] job_name
+    # @param [String] build_number
+    # @param [String] artifact_path
+    # @param [String] filename location to save artifact
+    #
+    def get_artifact_by_path(job_name,build_number,artifact_path,filename)
+      build_path = job.build_path(job_name, build_number)
+      uri= "#{@jenkins_path}/#{build_path}/#{artifact_path}"
+      response = make_http_request(Net::HTTP::Get.new(uri))
+      if response.code == "200"
+        File.open(File.expand_path(filename),"wb") do |file|
+          file.write(response.body)
+        end
+      else
+        raise "Couldn't get the artifact"
+      end
+    end
+
     # Connects to the server and download all artifacts of a build to a specified location
     #
     # @param [String] job_name
@@ -306,7 +333,7 @@ def get_artifacts(job_name, dldir, build_number = nil)
       @artifacts.each do |artifact|
         uri = URI.parse(artifact)
         http = Net::HTTP.new(uri.host, uri.port)
-        http.verify_mode = OpenSSL::SSL::VERIFY_NONE
+        http.verify_mode = @verify_mode || OpenSSL::SSL::VERIFY_NONE
         http.use_ssl = @ssl
         request = Net::HTTP::Get.new(uri.request_uri)
         request.basic_auth(@username, @password)
@@ -358,17 +385,22 @@ def make_http_request(request, follow_redirect = @follow_redirects)
         pkcs12 =OpenSSL::PKCS12.new(File.binread(@pkcs_file_path), @pass_phrase!=nil ? @pass_phrase : "")
         http.cert = pkcs12.certificate
         http.key = pkcs12.key
-        http.verify_mode = OpenSSL::SSL::VERIFY_NONE
+        http.verify_mode = @verify_mode || OpenSSL::SSL::VERIFY_NONE
       elsif @ssl
         http.use_ssl = true
 
-        http.verify_mode = OpenSSL::SSL::VERIFY_PEER
+        http.cert = OpenSSL::X509::Certificate.new(@crt) if @crt
+        http.key = OpenSSL::PKey::RSA.new(@key) if @key
+
+        # Why is this here a VERIFY_PEER and the rest are VERIFY_NONE?
+        http.verify_mode = @verify_mode || OpenSSL::SSL::VERIFY_PEER
         http.ca_file = @ca_file if @ca_file
       end
       http.open_timeout = @http_open_timeout
       http.read_timeout = @http_read_timeout
 
       response = http.request(request)
+      @cookies = response["set-cookie"]
       case response
         when Net::HTTPRedirection then
           # If we got a redirect request, follow it (if flag set), but don't
diff --git a/lib/jenkins_api_client/job.rb b/lib/jenkins_api_client/job.rb
index 30d7dc9c..c9289eb1 100644
--- a/lib/jenkins_api_client/job.rb
+++ b/lib/jenkins_api_client/job.rb
@@ -1662,6 +1662,10 @@ def find_artifact(job_name, build_number = 0)
         find_artifacts(job_name, build_number).first
       end
 
+      def build_path(job_name, build_number = 0)
+        "job/#{path_encode job_name}/#{build_number}"
+      end
+
       #A Method to check artifact exists path from the Current Build
       #
       # @param [String] job_name