diff --git a/package.json b/package.json
index d2a4b6ef..8a93a4fc 100644
--- a/package.json
+++ b/package.json
@@ -161,7 +161,7 @@
     "redis-lock": "^0.1.0",
     "rimraf": "^2.5.4",
     "safestart": "1.1.0",
-    "sequelize": "^4.3.1",
+    "sequelize": "4.28.6",
     "sequelize-cli": "^2.7.0",
     "sequelize-encrypted": "0.1.0",
     "slate": "^0.31.5",
diff --git a/server/api/__snapshots__/team.test.js.snap b/server/api/__snapshots__/team.test.js.snap
new file mode 100644
index 00000000..07df222e
--- /dev/null
+++ b/server/api/__snapshots__/team.test.js.snap
@@ -0,0 +1,88 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`#team.addAdmin should promote a new admin 1`] = `
+Object {
+  "avatarUrl": "http://example.com/avatar.png",
+  "email": "user1@example.com",
+  "id": "46fde1d4-0050-428f-9f0b-0bf77f4bdf61",
+  "isAdmin": true,
+  "name": "User 1",
+  "ok": true,
+  "status": 200,
+  "username": "user1",
+}
+`;
+
+exports[`#team.addAdmin should require admin 1`] = `
+Object {
+  "error": "only_available_for_admins",
+  "message": "Only available for admins",
+  "ok": false,
+  "status": 403,
+}
+`;
+
+exports[`#team.removeAdmin should demote an admin 1`] = `
+Object {
+  "avatarUrl": null,
+  "ok": true,
+  "status": 200,
+}
+`;
+
+exports[`#team.removeAdmin should require admin 1`] = `
+Object {
+  "error": "only_available_for_admins",
+  "message": "Only available for admins",
+  "ok": false,
+  "status": 403,
+}
+`;
+
+exports[`#team.removeAdmin shouldn't demote admins if only one available  1`] = `
+Object {
+  "error": "at_least_one_admin_is_required",
+  "message": "At least one admin is required",
+  "ok": false,
+  "status": 400,
+}
+`;
+
+exports[`#team.users should require admin 1`] = `
+Object {
+  "error": "only_available_for_admins",
+  "message": "Only available for admins",
+  "ok": false,
+  "status": 403,
+}
+`;
+
+exports[`#team.users should return teams paginated user list 1`] = `
+Object {
+  "data": Array [
+    Object {
+      "avatarUrl": "http://example.com/avatar.png",
+      "email": "admin@example.com",
+      "id": "fa952cff-fa64-4d42-a6ea-6955c9689046",
+      "isAdmin": true,
+      "name": "Admin User",
+      "username": "admin",
+    },
+    Object {
+      "avatarUrl": "http://example.com/avatar.png",
+      "email": "user1@example.com",
+      "id": "46fde1d4-0050-428f-9f0b-0bf77f4bdf61",
+      "isAdmin": false,
+      "name": "User 1",
+      "username": "user1",
+    },
+  ],
+  "ok": true,
+  "pagination": Object {
+    "limit": 15,
+    "nextPath": "/api/team.users?limit=15&offset=15",
+    "offset": 0,
+  },
+  "status": 200,
+}
+`;
diff --git a/server/api/__snapshots__/user.test.js.snap b/server/api/__snapshots__/user.test.js.snap
index 6ad5d9af..42c340db 100644
--- a/server/api/__snapshots__/user.test.js.snap
+++ b/server/api/__snapshots__/user.test.js.snap
@@ -13,7 +13,6 @@ exports[`#user.info should return known user 1`] = `
 Object {
   "data": Object {
     "avatarUrl": "http://example.com/avatar.png",
-    "email": "user1@example.com",
     "id": "46fde1d4-0050-428f-9f0b-0bf77f4bdf61",
     "name": "User 1",
     "username": "user1",
diff --git a/server/api/auth.js b/server/api/auth.js
index 6916739c..91d965e2 100644
--- a/server/api/auth.js
+++ b/server/api/auth.js
@@ -13,7 +13,7 @@ router.post('auth.info', auth(), async ctx => {
 
   ctx.body = {
     data: {
-      user: await presentUser(ctx, user),
+      user: await presentUser(ctx, user, { includeDetails: true }),
       team: await presentTeam(ctx, team),
     },
   };
@@ -51,9 +51,14 @@ router.post('auth.slack', async ctx => {
       name: data.user.name,
       email: data.user.email,
       teamId: team.id,
+      isAdmin: !teamExisted,
       slackData: data.user,
       slackAccessToken: data.access_token,
     });
+
+    // Set initial avatar
+    await user.updateAvatar();
+    await user.save();
   }
 
   if (!teamExisted) {
@@ -68,10 +73,6 @@ router.post('auth.slack', async ctx => {
     expires: new Date('2100'),
   });
 
-  // Update user's avatar
-  await user.updateAvatar();
-  await user.save();
-
   ctx.body = {
     data: {
       user: await presentUser(ctx, user),
diff --git a/server/api/hooks.js b/server/api/hooks.js
index 25051313..28c07186 100644
--- a/server/api/hooks.js
+++ b/server/api/hooks.js
@@ -59,6 +59,8 @@ router.post('hooks.slack', async ctx => {
   });
 
   if (!user) throw httpErrors.BadRequest('Invalid user');
+  if (!user.isAdmin)
+    throw httpErrors.BadRequest('Only admins can add integrations');
 
   const documents = await Document.searchForUser(user, text, {
     limit: 5,
diff --git a/server/api/team.js b/server/api/team.js
new file mode 100644
index 00000000..416f0874
--- /dev/null
+++ b/server/api/team.js
@@ -0,0 +1,70 @@
+// @flow
+import Router from 'koa-router';
+import httpErrors from 'http-errors';
+
+import User from '../models/User';
+import Team from '../models/Team';
+
+import auth from './middlewares/authentication';
+import pagination from './middlewares/pagination';
+import { presentUser } from '../presenters';
+
+const router = new Router();
+router.use(auth({ adminOnly: true }));
+
+router.post('team.users', pagination(), async ctx => {
+  const user = ctx.state.user;
+
+  const users = await User.findAll({
+    where: {
+      teamId: user.teamId,
+    },
+    order: [['createdAt', 'DESC']],
+    offset: ctx.state.pagination.offset,
+    limit: ctx.state.pagination.limit,
+  });
+
+  ctx.body = {
+    pagination: ctx.state.pagination,
+    data: users.map(user => presentUser(ctx, user, { includeDetails: true })),
+  };
+});
+
+router.post('team.addAdmin', async ctx => {
+  const { user } = ctx.body;
+  const admin = ctx.state.user;
+  ctx.assertPresent(user, 'id is required');
+
+  const team = await Team.findById(admin.teamId);
+  const promotedUser = await User.findOne({
+    where: { id: user, teamId: admin.teamId },
+  });
+
+  if (!promotedUser) throw httpErrors.NotFound();
+
+  await team.addAdmin(promotedUser);
+
+  ctx.body = presentUser(ctx, promotedUser, { includeDetails: true });
+});
+
+router.post('team.removeAdmin', async ctx => {
+  const { user } = ctx.body;
+  const admin = ctx.state.user;
+  ctx.assertPresent(user, 'id is required');
+
+  const team = await Team.findById(admin.teamId);
+  const demotedUser = await User.findOne({
+    where: { id: user, teamId: admin.teamId },
+  });
+
+  if (!demotedUser) throw httpErrors.NotFound();
+
+  try {
+    await team.removeAdmin(demotedUser);
+    ctx.body = presentUser(ctx, user, { includeDetails: true });
+  } catch (e) {
+    throw httpErrors.BadRequest(e.message);
+  }
+});
+
+export default router;
diff --git a/server/api/team.test.js b/server/api/team.test.js
new file mode 100644
index 00000000..ba4ad3be
--- /dev/null
+++ b/server/api/team.test.js
@@ -0,0 +1,108 @@
+/* eslint-disable flowtype/require-valid-file-annotation */
+import TestServer from 'fetch-test-server';
+
+import app from '..';
+
+import { flushdb, seed } from '../test/support';
+
+const server = new TestServer(app.callback());
+
+beforeEach(flushdb);
+afterAll(server.close);
+
+describe('#team.users', async () => {
+  it('should return teams paginated user list', async () => {
+    const { admin } = await seed();
+
+    const res = await server.post('/api/team.users', {
+      body: { token: admin.getJwtToken() },
+    });
+    const body = await res.json();
+
+    expect(res.status).toEqual(200);
+    expect(body).toMatchSnapshot();
+  });
+
+  it('should require admin', async () => {
+    const { user } = await seed();
+    const res = await server.post('/api/team.users', {
+      body: { token: user.getJwtToken() },
+    });
+    const body = await res.json();
+
+    expect(res.status).toEqual(403);
+    expect(body).toMatchSnapshot();
+  });
+});
+
+describe('#team.addAdmin', async () => {
+  it('should promote a new admin', async () => {
+    const { admin, user } = await seed();
+
+    const res = await server.post('/api/team.addAdmin', {
+      body: {
+        token: admin.getJwtToken(),
+        user: user.id,
+      },
+    });
+    const body = await res.json();
+
+    expect(res.status).toEqual(200);
+    expect(body).toMatchSnapshot();
+  });
+
+  it('should require admin', async () => {
+    const { user } = await seed();
+    const res = await server.post('/api/team.addAdmin', {
+      body: { token: user.getJwtToken() },
+    });
+    const body = await res.json();
+
+    expect(res.status).toEqual(403);
+    expect(body).toMatchSnapshot();
+  });
+});
+
+describe('#team.removeAdmin', async () => {
+  it('should demote an admin', async () => {
+    const { admin, user } = await seed();
+    await user.update({ isAdmin: true }); // Make another admin
+
+    const res = await server.post('/api/team.removeAdmin', {
+      body: {
+        token: admin.getJwtToken(),
+        user: user.id,
+      },
+    });
+    const body = await res.json();
+
+    expect(res.status).toEqual(200);
+    expect(body).toMatchSnapshot();
+  });
+
+  it("shouldn't demote admins if only one available ", async () => {
+    const { admin } = await seed();
+
+    const res = await server.post('/api/team.removeAdmin', {
+      body: {
+        token: admin.getJwtToken(),
+        user: admin.id,
+      },
+    });
+    const body = await res.json();
+
+    expect(res.status).toEqual(400);
+    expect(body).toMatchSnapshot();
+  });
+
+  it('should require admin', async () => {
+    const { user } = await seed();
+    const res = await server.post('/api/team.addAdmin', {
+      body: { token: user.getJwtToken() },
+    });
+    const body = await res.json();
+
+    expect(res.status).toEqual(403);
+    expect(body).toMatchSnapshot();
+  });
+});
diff --git a/server/models/Team.js b/server/models/Team.js
index bd486117..80cf8852 100644
--- a/server/models/Team.js
+++ b/server/models/Team.js
@@ -1,6 +1,7 @@
 // @flow
-import { DataTypes, sequelize } from '../sequelize';
+import { DataTypes, sequelize, Op } from '../sequelize';
 import Collection from './Collection';
+import User from './User';
 
 const Team = sequelize.define(
   'team',
@@ -41,4 +42,26 @@ Team.prototype.createFirstCollection = async function(userId) {
   return atlas;
 };
 
+Team.prototype.addAdmin = async function(user: User) {
+  return await user.update({ isAdmin: true });
+};
+
+Team.prototype.removeAdmin = async function(user: User) {
+  const res = await User.findAndCountAll({
+    where: {
+      teamId: user.teamId,
+      isAdmin: true,
+      id: {
+        [Op.ne]: user.id,
+      },
+    },
+    limit: 1,
+  });
+  if (res.count >= 1) {
+    return await user.update({ isAdmin: false });
+  } else {
+    throw new Error('At least one admin is required');
+  }
+};
+
 export default Team;
diff --git a/server/presenters/__snapshots__/user.test.js.snap b/server/presenters/__snapshots__/user.test.js.snap
index 8a5c7ad1..a4e6bd70 100644
--- a/server/presenters/__snapshots__/user.test.js.snap
+++ b/server/presenters/__snapshots__/user.test.js.snap
@@ -3,7 +3,6 @@
 exports[`presents a user 1`] = `
 Object {
   "avatarUrl": "http://example.com/avatar.png",
-  "email": undefined,
   "id": "123",
   "name": "Test User",
   "username": "testuser",
@@ -13,7 +12,6 @@ Object {
 exports[`presents a user without slack data 1`] = `
 Object {
   "avatarUrl": null,
-  "email": undefined,
   "id": "123",
   "name": "Test User",
   "username": "testuser",
diff --git a/server/presenters/document.js b/server/presenters/document.js
index a665b307..4414522f 100644
--- a/server/presenters/document.js
+++ b/server/presenters/document.js
@@ -1,5 +1,6 @@
 // @flow
 import _ from 'lodash';
+import { Op } from 'sequelize';
 import { User, Document } from '../models';
 import presentUser from './user';
 import presentCollection from './collection';
@@ -57,7 +58,7 @@ async function present(ctx: Object, document: Document, options: ?Options) {
     // This could be further optimized by using ctx.cache
     data.collaborators = await User.findAll({
       where: {
-        id: { $in: _.takeRight(document.collaboratorIds, 10) || [] },
+        id: { [Op.in]: _.takeRight(document.collaboratorIds, 10) || [] },
       },
     }).map(user => presentUser(ctx, user));
 
diff --git a/server/presenters/user.js b/server/presenters/user.js
index 1281c45d..2b6ff1f7 100644
--- a/server/presenters/user.js
+++ b/server/presenters/user.js
@@ -1,17 +1,37 @@
 // @flow
 import User from '../models/User';
 
-function present(ctx: Object, user: User) {
+type Options = {
+  includeDetails?: boolean,
+};
+
+type UserPresentation = {
+  id: string,
+  username: string,
+  name: string,
+  avatarUrl: ?string,
+  email?: string,
+  isAdmin?: boolean,
+};
+
+export default (
+  ctx: Object,
+  user: User,
+  options: Options = {}
+): UserPresentation => {
   ctx.cache.set(user.id, user);
 
-  return {
-    id: user.id,
-    username: user.username,
-    name: user.name,
-    email: user.email,
-    avatarUrl:
-      user.avatarUrl || (user.slackData ? user.slackData.image_192 : null),
-  };
-}
+  const userData = {};
+  userData.id = user.id;
+  userData.username = user.username;
+  userData.name = user.name;
+  userData.avatarUrl =
+    user.avatarUrl || (user.slackData ? user.slackData.image_192 : null);
 
-export default present;
+  if (options.includeDetails) {
+    userData.isAdmin = user.isAdmin;
+    userData.email = user.email;
+  }
+
+  return userData;
+};
diff --git a/server/sequelize.js b/server/sequelize.js
index 4c0275ab..83c05954 100644
--- a/server/sequelize.js
+++ b/server/sequelize.js
@@ -8,8 +8,10 @@ const secretKey = process.env.SECRET_KEY;
 export const encryptedFields = EncryptedField(Sequelize, secretKey);
 
 export const DataTypes = Sequelize;
+export const Op = Sequelize.Op;
 
 export const sequelize = new Sequelize(process.env.DATABASE_URL, {
   logging: debug('sql'),
   typeValidation: true,
+  operatorsAliases: false,
 });
diff --git a/server/test/support.js b/server/test/support.js
index 33f91509..7b1564e3 100644
--- a/server/test/support.js
+++ b/server/test/support.js
@@ -36,6 +36,21 @@ const seed = async () => {
     },
   });
 
+  const admin = await User.create({
+    id: 'fa952cff-fa64-4d42-a6ea-6955c9689046',
+    email: 'admin@example.com',
+    username: 'admin',
+    name: 'Admin User',
+    password: 'test123!',
+    teamId: team.id,
+    isAdmin: true,
+    slackId: 'U2399UF1P',
+    slackData: {
+      id: 'U2399UF1P',
+      image_192: 'http://example.com/avatar.png',
+    },
+  });
+
   let collection = await Collection.create({
     id: '26fde1d4-0050-428f-9f0b-0bf77f8bdf62',
     name: 'Collection',
@@ -59,6 +74,7 @@ const seed = async () => {
 
   return {
     user,
+    admin,
     collection,
     document,
     team,
diff --git a/yarn.lock b/yarn.lock
index 5850768e..68962d6f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3611,9 +3611,9 @@ generic-pool@2.4.3:
   version "2.4.3"
   resolved "https://registry.yarnpkg.com/generic-pool/-/generic-pool-2.4.3.tgz#780c36f69dfad05a5a045dd37be7adca11a4f6ff"
 
-generic-pool@^3.1.6:
-  version "3.1.7"
-  resolved "https://registry.yarnpkg.com/generic-pool/-/generic-pool-3.1.7.tgz#dac22b2c7a7a04e41732f7d8d2d25a303c88f662"
+generic-pool@^3.1.8:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/generic-pool/-/generic-pool-3.2.0.tgz#c1d485ecbd6f18c0513d4741d098a6715eaeeca8"
 
 get-caller-file@^1.0.1:
   version "1.0.2"
@@ -8359,12 +8359,12 @@ restore-cursor@^1.0.1:
     exit-hook "^1.0.0"
     onetime "^1.0.0"
 
-retry-as-promised@^2.0.0:
-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/retry-as-promised/-/retry-as-promised-2.3.0.tgz#27bf5ccd999932b31665696825cf3630c27c562d"
+retry-as-promised@^2.3.1:
+  version "2.3.2"
+  resolved "https://registry.yarnpkg.com/retry-as-promised/-/retry-as-promised-2.3.2.tgz#cd974ee4fd9b5fe03cbf31871ee48221c07737b7"
   dependencies:
     bluebird "^3.4.6"
-    debug "^2.2.0"
+    debug "^2.6.9"
 
 right-align@^0.1.1:
   version "0.1.3"
@@ -8527,26 +8527,26 @@ sequelize-encrypted@0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/sequelize-encrypted/-/sequelize-encrypted-0.1.0.tgz#f9c7a94dc1b4413e1347a49f06cd07b7f3bf9916"
 
-sequelize@^4.3.1:
-  version "4.8.0"
-  resolved "https://registry.yarnpkg.com/sequelize/-/sequelize-4.8.0.tgz#1987a97deceb749da7e25cd27059adb69dbf81c2"
+sequelize@4.28.6:
+  version "4.28.6"
+  resolved "https://registry.yarnpkg.com/sequelize/-/sequelize-4.28.6.tgz#44b4b69f550bc53f41135bf8db73c5d492cb7e64"
   dependencies:
     bluebird "^3.4.6"
     cls-bluebird "^2.0.1"
     debug "^3.0.0"
     depd "^1.1.0"
     dottie "^2.0.0"
-    generic-pool "^3.1.6"
+    generic-pool "^3.1.8"
     inflection "1.12.0"
     lodash "^4.17.1"
     moment "^2.13.0"
     moment-timezone "^0.5.4"
-    retry-as-promised "^2.0.0"
+    retry-as-promised "^2.3.1"
     semver "^5.0.1"
     terraformer-wkt-parser "^1.1.2"
     toposort-class "^1.0.1"
     uuid "^3.0.0"
-    validator "^8.0.0"
+    validator "^9.1.0"
     wkx "^0.4.1"
 
 sequencify@~0.0.7:
@@ -9726,9 +9726,9 @@ validator@5.2.0:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/validator/-/validator-5.2.0.tgz#e66fb3ec352348c1f7232512328738d8d66a9689"
 
-validator@^8.0.0:
-  version "8.1.0"
-  resolved "https://registry.yarnpkg.com/validator/-/validator-8.1.0.tgz#89cf6b512ff71eba886afd8d10d47f8dc800eac0"
+validator@^9.1.0:
+  version "9.2.0"
+  resolved "https://registry.yarnpkg.com/validator/-/validator-9.2.0.tgz#ad216eed5f37cac31a6fe00ceab1f6b88bded03e"
 
 value-equal@^0.4.0:
   version "0.4.0"