diff --git a/bin/run-mastodon.js b/bin/run-mastodon.js
index ffea10a..7f0b732 100644
--- a/bin/run-mastodon.js
+++ b/bin/run-mastodon.js
@@ -3,7 +3,7 @@ import pify from 'pify'
 import childProcessPromise from 'child-process-promise'
 import path from 'path'
 import fs from 'fs'
-import { waitForMastodonApiToStart, waitForMastodonUiToStart } from './wait-for-mastodon-to-start'
+import { waitForMastodonUiToStart, waitForMastodonApiToStart } from './wait-for-mastodon-to-start'
 import mkdirpCB from 'mkdirp'
 
 const exec = childProcessPromise.exec
diff --git a/bin/wait-for-mastodon-data.js b/bin/wait-for-mastodon-data.js
new file mode 100644
index 0000000..9931df8
--- /dev/null
+++ b/bin/wait-for-mastodon-data.js
@@ -0,0 +1,30 @@
+import fetch from 'node-fetch'
+import { actions } from './mastodon-data'
+
+const numStatuses = actions.filter(_ => _.post || _.boost).length
+
+async function waitForMastodonData () {
+  while (true) {
+    try {
+      let json = await ((await fetch('http://127.0.0.1:3000/api/v1/instance')).json())
+      if (json.stats.status_count === numStatuses) {
+        break
+      } else {
+        console.log('Waiting for number of statuses to equal ' +
+          numStatuses + ' (currently ' + json.stats.status_count + ')...')
+      }
+    } catch (err) {
+      console.log('Waiting for Mastodon API to be available...')
+    } finally {
+      await new Promise(resolve => setTimeout(resolve, 5000))
+    }
+  }
+  console.log('Mastodon data populated')
+}
+
+if (require.main === module) {
+  waitForMastodonData().catch(err => {
+    console.error(err)
+    process.exit(1)
+  })
+}
diff --git a/bin/wait-for-mastodon-to-start.js b/bin/wait-for-mastodon-to-start.js
index b0f5b17..8f3da02 100644
--- a/bin/wait-for-mastodon-to-start.js
+++ b/bin/wait-for-mastodon-to-start.js
@@ -31,10 +31,9 @@ export async function waitForMastodonApiToStart () {
 }
 
 if (require.main === module) {
-  Promise.all([
-    waitForMastodonApiToStart(),
-    waitForMastodonUiToStart()
-  ]).catch(err => {
+  Promise.resolve()
+    .then(waitForMastodonApiToStart)
+    .then(waitForMastodonUiToStart).catch(err => {
     console.error(err)
     process.exit(1)
   })
diff --git a/package.json b/package.json
index 5aa17e6..2b96a8b 100644
--- a/package.json
+++ b/package.json
@@ -16,8 +16,9 @@
     "run-testcafe": "cross-env-shell testcafe --hostname localhost --skip-js-errors $BROWSER tests/spec",
     "test": "cross-env BROWSER=chrome:headless npm run test-browser",
     "test-browser": "run-p --race run-mastodon dev test-mastodon",
-    "test-mastodon": "run-s wait-for-mastodon-to-start run-testcafe",
+    "test-mastodon": "run-s wait-for-mastodon-to-start wait-for-mastodon-data run-testcafe",
     "wait-for-mastodon-to-start": "node -r @std/esm bin/wait-for-mastodon-to-start.js",
+    "wait-for-mastodon-data": "node -r @std/esm bin/wait-for-mastodon-data.js",
     "globalize-css": "node ./bin/globalize-css.js",
     "deglobalize-css": "node ./bin/globalize-css.js --reverse",
     "backup-mastodon-data": "pg_dump -Fc mastodon_development > fixtures/dump.sql && cd mastodon/public/system && tar -czf ../../../fixtures/system.tgz ."