diff --git a/Gemfile.lock b/Gemfile.lock
index bc4a1f5b..c56de6bf 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -50,7 +50,7 @@ GIT
 
 GIT
   remote: git://github.com/travis-ci/travis-core.git
-  revision: ba10e214824632f15598555a2634ce3347d2f227
+  revision: 4834399048b8c9cff4882d435f770826930665f6
   specs:
     travis-core (0.0.1)
       actionmailer (~> 3.2.19)
@@ -81,7 +81,7 @@ GIT
 
 GIT
   remote: git://github.com/travis-ci/travis-support.git
-  revision: 4fdd220ed7b06a12951e5d74a763c05a80eb0d20
+  revision: e7f81093f83bd029cca6508739c5720e57e3d571
   specs:
     travis-support (0.0.1)
 
diff --git a/lib/travis/api/v3/access_control/generic.rb b/lib/travis/api/v3/access_control/generic.rb
index 8220d653..4071ad94 100644
--- a/lib/travis/api/v3/access_control/generic.rb
+++ b/lib/travis/api/v3/access_control/generic.rb
@@ -48,6 +48,10 @@ module Travis::API::V3
       unrestricted_api?
     end
 
+    def user_writable?(user)
+      user and user == self.user
+    end
+
     def repository_visible?(repository)
       return true if unrestricted_api? and not repository.private?
       private_repository_visible?(repository)
diff --git a/lib/travis/api/v3/queries/organization.rb b/lib/travis/api/v3/queries/organization.rb
index 8c07c910..0aabf285 100644
--- a/lib/travis/api/v3/queries/organization.rb
+++ b/lib/travis/api/v3/queries/organization.rb
@@ -6,5 +6,8 @@ module Travis::API::V3
       return Models::Organization.find_by_id(id) if id
       raise WrongParams, 'missing organization.id'.freeze
     end
+
+    def sync
+    end
   end
 end
diff --git a/lib/travis/api/v3/queries/user.rb b/lib/travis/api/v3/queries/user.rb
index af067d19..28529b35 100644
--- a/lib/travis/api/v3/queries/user.rb
+++ b/lib/travis/api/v3/queries/user.rb
@@ -6,5 +6,8 @@ module Travis::API::V3
       return Models::User.find_by_id(id) if id
       raise WrongParams, 'missing user.id'.freeze
     end
+
+    def sync(user = find)
+    end
   end
 end
diff --git a/lib/travis/api/v3/query.rb b/lib/travis/api/v3/query.rb
index 2c45d993..6266ff8b 100644
--- a/lib/travis/api/v3/query.rb
+++ b/lib/travis/api/v3/query.rb
@@ -32,12 +32,13 @@ module Travis::API::V3
     end
 
     def perform_async(identifier, *args)
-      class_name, queue = @@sidekiq_cache[identifier] ||= [
-        "Travis::Sidekiq::#{identifier.to_s.camelcase}".freeze,
-        identifier.to_s.pluralize.freeze
-      ]
-
-      ::Sidekiq::Client.push('queue'.freeze => queue, 'class'.freeze => class_name, 'args'.freeze => args)
+      Sidekiqs[identifier].perform_async(*args)
+      # class_name, queue = @@sidekiq_cache[identifier] ||= [
+      #   "Travis::Sidekiq::#{identifier.to_s.camelcase}".freeze,
+      #   identifier.to_s.pluralize.freeze
+      # ]
+      #
+      # ::Sidekiq::Client.push('queue'.freeze => queue, 'class'.freeze => class_name, 'args'.freeze => args)
     end
 
     def includes?(key)
diff --git a/lib/travis/api/v3/routes.rb b/lib/travis/api/v3/routes.rb
index ebc26022..34e311f1 100644
--- a/lib/travis/api/v3/routes.rb
+++ b/lib/travis/api/v3/routes.rb
@@ -34,8 +34,9 @@ module Travis::API::V3
 
     resource :user do
       route '/user'
-      get :current
-      get :find, '/{user.id}'
+      get  :current
+      get  :find, '/{user.id}'
+      post :sync, '/{user.id}/sync'
     end
 
     resource :organization do
diff --git a/lib/travis/api/v3/services/user/sync.rb b/lib/travis/api/v3/services/user/sync.rb
new file mode 100644
index 00000000..b290d62c
--- /dev/null
+++ b/lib/travis/api/v3/services/user/sync.rb
@@ -0,0 +1,7 @@
+module Travis::API::V3
+  class Services::User::Sync < Service
+    def run!
+      query.sync if access_control.writable? find
+    end
+  end
+end
diff --git a/lib/travis/api/v3/sidekiq.rb b/lib/travis/api/v3/sidekiq.rb
new file mode 100644
index 00000000..681d5b01
--- /dev/null
+++ b/lib/travis/api/v3/sidekiq.rb
@@ -0,0 +1,27 @@
+module Travis::API::V3
+  class Sidekiq
+    def self.client(value = nil)
+      @client = value if value
+      @client ||= defined?(super) ? super : ::Sidekiq::Client.default
+    end
+
+    attr_accessor :class_name, :queue, :identifier
+    attr_writer :client
+
+    def initialize(identifier, class_name: nil, queue: nil, client: nil)
+      @identifier = identifier
+      @class_name = class_name || identifier
+      @class_name = "Travis::Sidekiq::%s".freeze % @class_name.to_s.camelcase if @class_name.is_a? Symbol
+      @queue      = queue.to_s || "default".freeze
+      @client     = client
+    end
+
+    def client
+      @client || self.class.client
+    end
+
+    def perform_async(*args)
+      client.push('queue'.freeze => queue, 'class'.freeze => class_name, 'args'.freeze => args)
+    end
+  end
+end
\ No newline at end of file
diff --git a/lib/travis/api/v3/sidekiqs.rb b/lib/travis/api/v3/sidekiqs.rb
new file mode 100644
index 00000000..70f2d11d
--- /dev/null
+++ b/lib/travis/api/v3/sidekiqs.rb
@@ -0,0 +1,8 @@
+module Travis::API::V3
+  module Sidekiqs
+    extend ConstantResolver
+
+    BuildRequest = Sidekiq.new(:build_request,    queue: :build_requests)
+    SyncUser     = Sidekiq.new(:synchronize_user, queue: :user_sync)
+  end
+end
diff --git a/spec/v3/service_index_spec.rb b/spec/v3/service_index_spec.rb
index 79b9419b..0cb96b8f 100644
--- a/spec/v3/service_index_spec.rb
+++ b/spec/v3/service_index_spec.rb
@@ -104,7 +104,11 @@ describe Travis::API::V3::ServiceIndex do
            "find"=>
             [{"@type"=>"template",
               "request_method"=>"GET",
-              "uri_template"=>"#{path}user/{user.id}"}]},
+              "uri_template"=>"#{path}user/{user.id}"}],
+           "sync"=>
+            [{"@type"=>"template",
+              "request_method"=>"POST",
+              "uri_template"=>"#{path}user/{user.id}/sync"}]},
          "attributes"=>["id", "login", "name", "github_id", "is_syncing", "synced_at"]}}
     }
 
diff --git a/spec/v3/services/user/sync_spec.rb b/spec/v3/services/user/sync_spec.rb
new file mode 100644
index 00000000..daabe2d2
--- /dev/null
+++ b/spec/v3/services/user/sync_spec.rb
@@ -0,0 +1,35 @@
+require 'spec_helper'
+
+describe Travis::API::V3::Services::User::Find do
+  let(:user) { User.find_by_login('svenfuchs') }
+
+  let(:token)   { Travis::Api::App::AccessToken.create(user: user, app_id: 1) }
+  let(:headers) {{ 'HTTP_AUTHORIZATION' => "token #{token}"                  }}
+
+  before do
+    Travis::Features.stubs(:owner_active?).returns(true)
+    @original_sidekiq = Sidekiq::Client
+    Sidekiq.send(:remove_const, :Client) # to avoid a warning
+    Sidekiq::Client = []
+  end
+
+  after do
+    Sidekiq.send(:remove_const, :Client) # to avoid a warning
+    Sidekiq::Client = @original_sidekiq
+  end
+
+  describe "authenticated as user with access" do
+    before  { post("/v3/user/#{user.id}/sync", {}, headers) }
+    example { expect(last_response.status).to be 202        }
+    # example { expect(JSON.load(body)).to be ==        {
+    #   "@type"      => "user",
+    #   "@href"      => "/v3/user/#{user.id}",
+    #   "id"         => user.id,
+    #   "login"      => "svenfuchs",
+    #   "name"       =>"Sven Fuchs",
+    #   "github_id"  => user.github_id,
+    #   "is_syncing" => user.is_syncing,
+    #   "synced_at"  => user.synced_at
+    # }}
+  end
+end
\ No newline at end of file