diff --git a/lib/slack-profile-cache.js b/lib/slack-profile-cache.js
index 37acf6e..883bb40 100644
--- a/lib/slack-profile-cache.js
+++ b/lib/slack-profile-cache.js
@@ -13,6 +13,7 @@ const MemCache = require('mem-cache')
 const { WebClient } = require('@slack/client')
 
 const token = process.env.SLACK_USER_TOKEN || ''
+const slackWebClient = new WebClient(token)
 const cacheMemcachedKey = 'slack-profile-cache-json'
 const slackIdCacheKeyPrefix = 'Slack-'
 const slackUsernameCacheKeyPrefix = 'SlackUN-'
@@ -113,8 +114,8 @@ async function internalBuild (robot, cache) {
 
   try {
     const slackWeb = new WebClient(token) // We need to use a different token because users.profile API is not available to bot users
-    const usersList = await slackWeb.users.list() // TODO: This call should be paginated to avoid hitting limits (memory, API): https://api.slack.com/docs/pagination#cursors
-    const activeUsersList = usersList.members.filter(u => !u.deleted && !u.is_bot && u.id !== 'USLACKBOT')
+    const usersList = await getUsersList()
+    const activeUsersList = usersList.filter(u => !u.deleted && !u.is_bot && u.id !== 'USLACKBOT')
 
     let gitHubFieldId = null
     let pubKeyFieldId = null
@@ -251,3 +252,14 @@ function timeout (ms) {
 async function sleep (timeoutMs) {
   await timeout(timeoutMs)
 }
+
+async function getUsersList (users = [], cursor = '') {
+  const res = await slackWebClient.users.list({limit: 200, cursor: cursor})
+  users = users.concat(res.members)
+
+  if (!res.response_metadata.next_cursor) {
+    return users
+  }
+
+  return getUsersList(users, res.response_metadata.next_cursor)
+}