diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index 4eb95d8a215..595e634b7cb 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -95,6 +95,9 @@ module API
       expose :access_level do |user, options|
         options[:project].project_members.find_by(user_id: user.id).access_level
       end
+      expose :expires_at do |user, options|
+        options[:project].project_members.find_by(user_id: user.id).expires_at
+      end
     end
 
     class Group < Grape::Entity
diff --git a/lib/api/project_members.rb b/lib/api/project_members.rb
index 6a0b3e7d134..590658c5023 100644
--- a/lib/api/project_members.rb
+++ b/lib/api/project_members.rb
@@ -38,6 +38,7 @@ module API
       #   id (required) - The ID of a project
       #   user_id (required) - The ID of a user
       #   access_level (required) - Project access level
+      #   expires_at (optional) - Date string in the format YEAR-MONTH-DAY
       # Example Request:
       #   POST /projects/:id/members
       post ":id/members" do
@@ -49,7 +50,8 @@ module API
         if project_member.nil?
           project_member = user_project.project_members.new(
             user_id: params[:user_id],
-            access_level: params[:access_level]
+            access_level: params[:access_level],
+            expires_at: params[:expires_at]
           )
         end
 
@@ -67,16 +69,17 @@ module API
       #   id (required) - The ID of a project
       #   user_id (required) - The ID of a team member
       #   access_level (required) - Project access level
+      #   expires_at (optional) - Date string in the format YEAR-MONTH-DAY
       # Example Request:
       #   PUT /projects/:id/members/:user_id
       put ":id/members/:user_id" do
         authorize! :admin_project, user_project
         required_attributes! [:access_level]
-
+        attrs = attributes_for_keys [:access_level, :expires_at]
         project_member = user_project.project_members.find_by(user_id: params[:user_id])
         not_found!("User can not be found") if project_member.nil?
 
-        if project_member.update_attributes(access_level: params[:access_level])
+        if project_member.update_attributes(attrs)
           @member = project_member.user
           present @member, with: Entities::ProjectMember, project: user_project
         else
diff --git a/spec/requests/api/project_members_spec.rb b/spec/requests/api/project_members_spec.rb
index 9a7c1da4401..360bf205762 100644
--- a/spec/requests/api/project_members_spec.rb
+++ b/spec/requests/api/project_members_spec.rb
@@ -54,12 +54,16 @@ describe API::API, api: true  do
   describe "POST /projects/:id/members" do
     it "should add user to project team" do
       expect do
-        post api("/projects/#{project.id}/members", user), user_id: user2.id, access_level: ProjectMember::DEVELOPER
+        post api("/projects/#{project.id}/members", user),
+          user_id: user2.id,
+          access_level: ProjectMember::DEVELOPER,
+          expires_at: '2016-08-05'
       end.to change { ProjectMember.count }.by(1)
 
       expect(response).to have_http_status(201)
       expect(json_response['username']).to eq(user2.username)
       expect(json_response['access_level']).to eq(ProjectMember::DEVELOPER)
+      expect(json_response['expires_at']).to eq('2016-08-05')
     end
 
     it "should return a 201 status if user is already project member" do
@@ -95,10 +99,13 @@ describe API::API, api: true  do
     before { project_member2 }
 
     it "should update project team member" do
-      put api("/projects/#{project.id}/members/#{user3.id}", user), access_level: ProjectMember::MASTER
+      put api("/projects/#{project.id}/members/#{user3.id}", user),
+        access_level: ProjectMember::MASTER,
+        expires_at: '2016-08-05'
       expect(response).to have_http_status(200)
       expect(json_response['username']).to eq(user3.username)
       expect(json_response['access_level']).to eq(ProjectMember::MASTER)
+      expect(json_response['expires_at']).to eq('2016-08-05')
     end
 
     it "should return a 404 error if user_id is not found" do