diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index dbd03ea74faad7e1a61b8eeb1cbf48c7d7f14490..8298e3ad34c0b1266d821f70e2dac07002fec0c3 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -408,6 +408,7 @@ module API
 
     class RunnerDetails < Runner
       expose :tag_list
+      expose :run_untagged
       expose :version, :revision, :platform, :architecture
       expose :contacted_at
       expose :token, if: lambda { |runner, options| options[:current_user].is_admin? || !runner.is_shared? }
diff --git a/lib/api/runners.rb b/lib/api/runners.rb
index 8ec91485b26b7b305f8f8141298a014b4017631e..4faba9dc87ba635a93c30707dd523bb7abc63eb2 100644
--- a/lib/api/runners.rb
+++ b/lib/api/runners.rb
@@ -49,7 +49,7 @@ module API
         runner = get_runner(params[:id])
         authenticate_update_runner!(runner)
 
-        attrs = attributes_for_keys [:description, :active, :tag_list]
+        attrs = attributes_for_keys [:description, :active, :tag_list, :run_untagged]
         if runner.update(attrs)
           present runner, with: Entities::RunnerDetails, current_user: current_user
         else
diff --git a/spec/requests/api/runners_spec.rb b/spec/requests/api/runners_spec.rb
index 3af61d4b33581119c49d1278c172b0c19c7b9bbd..73ae8ef631c14dfb3d8f25d4bbb980484d858d5f 100644
--- a/spec/requests/api/runners_spec.rb
+++ b/spec/requests/api/runners_spec.rb
@@ -184,21 +184,24 @@ describe API::Runners, api: true  do
           description = shared_runner.description
           active = shared_runner.active
 
-          put api("/runners/#{shared_runner.id}", admin), description: "#{description}_updated", active: !active,
-                                                          tag_list: ['ruby2.1', 'pgsql', 'mysql']
+          update_runner(shared_runner.id, admin, description: "#{description}_updated",
+                                                 active: !active,
+                                                 tag_list: ['ruby2.1', 'pgsql', 'mysql'],
+                                                 run_untagged: 'false')
           shared_runner.reload
 
           expect(response.status).to eq(200)
           expect(shared_runner.description).to eq("#{description}_updated")
           expect(shared_runner.active).to eq(!active)
           expect(shared_runner.tag_list).to include('ruby2.1', 'pgsql', 'mysql')
+          expect(shared_runner.run_untagged?).to be false
         end
       end
 
       context 'when runner is not shared' do
         it 'should update runner' do
           description = specific_runner.description
-          put api("/runners/#{specific_runner.id}", admin), description: 'test'
+          update_runner(specific_runner.id, admin, description: 'test')
           specific_runner.reload
 
           expect(response.status).to eq(200)
@@ -208,10 +211,14 @@ describe API::Runners, api: true  do
       end
 
       it 'should return 404 if runner does not exists' do
-        put api('/runners/9999', admin), description: 'test'
+        update_runner(9999, admin, description: 'test')
 
         expect(response.status).to eq(404)
       end
+
+      def update_runner(id, user, args)
+        put api("/runners/#{id}", user), args
+      end
     end
 
     context 'authorized user' do