diff --git a/example.rb b/example.rb
index 5e92b808..8830eae5 100644
--- a/example.rb
+++ b/example.rb
@@ -120,8 +120,8 @@
 #
 # # Transition an issue
 # # -------------------
-# issue_transition = issue.transitions.build
-# issue_transition.save!('transition' => {'id' => transition_id})
+# issue_transition = underlying_jira.transitions.all.find { |t| t.name == "Transition" }
+# issue_transition.save('transition' => { 'id' => transition.id })
 #
 # # Change assignee
 # # -------------------
diff --git a/lib/jira/resource/sprint.rb b/lib/jira/resource/sprint.rb
index 74beffd4..3ea7caf5 100644
--- a/lib/jira/resource/sprint.rb
+++ b/lib/jira/resource/sprint.rb
@@ -48,7 +48,7 @@ def get_sprint_details_attribute(attribute_name)
 
       def get_sprint_details
         search_url =
-          "#{client.options[:site]}#{client.options[:client_path]}/rest/greenhopper/1.0/rapid/charts/sprintreport?rapidViewId=#{rapidview_id}&sprintId=#{id}"
+          "#{client.options[:site]}#{client.options[:client_path]}/rest/agile/1.0/sprint/#{id}"
         begin
           response = client.get(search_url)
         rescue StandardError
@@ -56,24 +56,12 @@ def get_sprint_details
         end
         json = self.class.parse_json(response.body)
 
-        @start_date = Date.parse(json['sprint']['startDate']) unless json['sprint']['startDate'] == 'None'
-        @end_date = Date.parse(json['sprint']['endDate']) unless json['sprint']['endDate'] == 'None'
-        @completed_date = Date.parse(json['sprint']['completeDate']) unless json['sprint']['completeDate'] == 'None'
+        @start_date = json['sprint']['startDate'] && Date.parse(json['sprint']['startDate'])
+        @end_date = json['sprint']['endDate'] && Date.parse(json['sprint']['endDate'])
+        @completed_date = json['sprint']['completeDate'] && Date.parse(json['sprint']['completeDate'])
         @sprint_report = client.SprintReport.build(json['contents'])
       end
 
-      def rapidview_id
-        return @attrs['rapidview_id'] if @attrs['rapidview_id']
-        search_url = client.options[:site] + '/secure/GHGoToBoard.jspa?sprintId=' + id.to_s
-        begin
-          response = client.get(search_url)
-        rescue JIRA::HTTPError => error
-          return unless error.response.instance_of? Net::HTTPFound
-          rapid_view_match = /rapidView=(\d+)&/.match(error.response['location'])
-          @attrs['rapidview_id'] = rapid_view_match[1] unless rapid_view_match.nil?
-        end
-      end
-
       def save(attrs = {}, _path = nil)
         attrs = @attrs if attrs.empty?
         super(attrs, agile_path)
diff --git a/lib/jira/resource/transition.rb b/lib/jira/resource/transition.rb
index e865c6f6..44d48656 100644
--- a/lib/jira/resource/transition.rb
+++ b/lib/jira/resource/transition.rb
@@ -24,6 +24,19 @@ def self.all(client, options = {})
           issue.transitions.build(transition)
         end
       end
+
+      # Saves the specified resource attributes by sending either a POST or PUT
+      # request to JIRA, depending on resource.new_record?
+      #
+      # Accepts an attributes hash of the values to be saved.  Will throw a
+      # JIRA::HTTPError if the request fails (response is not HTTP 2xx).
+      def save!(attrs, path = nil)
+        path = "#{client.options[:site]}#{client.options[:context]}/rest/api/2/issue/#{self.issue_id}/transitions"
+        response = client.send(:post, path, attrs.to_json)
+        set_attrs_from_response(response)
+        @expanded = false
+        true
+      end
     end
   end
 end