diff --git a/.circleci/config.yml b/.circleci/config.yml
index 467aabc59..090d1356e 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -3,10 +3,10 @@ version: 2.1
 executors:
   node-browsers:
     docker:
-      - image: circleci/node:16-browsers
+      - image: cimg/node:16.20-browsers
   node-browsers-medium-plus:
     docker:
-      - image: circleci/node:16-browsers
+      - image: cimg/node:16.20-browsers
     resource_class: medium+
     environment:
       NODE_OPTIONS: --max_old_space_size=2048
diff --git a/.circleci/scripts/chrome-install.sh b/.circleci/scripts/chrome-install.sh
index cc83d987e..450293197 100755
--- a/.circleci/scripts/chrome-install.sh
+++ b/.circleci/scripts/chrome-install.sh
@@ -4,6 +4,8 @@ set -e
 set -u
 set -o pipefail
 
+sudo apt-get update
+
 # To get the latest version, see <https://www.ubuntuupdates.org/ppa/google_chrome?dist=stable>
 CHROME_VERSION='111.0.5563.64-1'
 CHROME_BINARY="google-chrome-stable_${CHROME_VERSION}_amd64.deb"
diff --git a/.circleci/scripts/firefox-install.sh b/.circleci/scripts/firefox-install.sh
index be31f8bf4..4cb30ec32 100755
--- a/.circleci/scripts/firefox-install.sh
+++ b/.circleci/scripts/firefox-install.sh
@@ -9,10 +9,6 @@ FIREFOX_BINARY="firefox-${FIREFOX_VERSION}.tar.bz2"
 FIREFOX_BINARY_URL="https://ftp.mozilla.org/pub/firefox/releases/${FIREFOX_VERSION}/linux-x86_64/en-US/${FIREFOX_BINARY}"
 FIREFOX_PATH='/opt/firefox'
 
-printf '%s\n' "Removing old Firefox installation"
-
-sudo rm -r "${FIREFOX_PATH}"
-
 printf '%s\n' "Downloading & installing Firefox ${FIREFOX_VERSION}"
 
 wget --quiet --show-progress -O- "${FIREFOX_BINARY_URL}" | sudo tar xj -C /opt
diff --git a/test/e2e/helpers.js b/test/e2e/helpers.js
index 1dfccf73f..bc46e568f 100644
--- a/test/e2e/helpers.js
+++ b/test/e2e/helpers.js
@@ -10,7 +10,6 @@ const FixtureServer = require('./fixture-server');
 const PhishingWarningPageServer = require('./phishing-warning-page-server');
 const { buildWebDriver } = require('./webdriver');
 const { PAGES } = require('./webdriver/driver');
-const { ensureXServerIsRunning } = require('./x-server');
 const GanacheSeeder = require('./seeder/ganache-seeder');
 
 const tinyDelayMs = 200;
@@ -107,12 +106,7 @@ async function withFixtures(options, testSuite) {
     }
     const mockedEndpoint = await setupMocking(mockServer, testSpecificMock);
     await mockServer.start(8000);
-    if (
-      process.env.SELENIUM_BROWSER === 'chrome' &&
-      process.env.CI === 'true'
-    ) {
-      await ensureXServerIsRunning();
-    }
+
     driver = (await buildWebDriver(driverOptions)).driver;
     webDriver = driver.driver;
 
diff --git a/test/e2e/metamask-ui.spec.js b/test/e2e/metamask-ui.spec.js
index e3a53ffdd..c2b630c8f 100644
--- a/test/e2e/metamask-ui.spec.js
+++ b/test/e2e/metamask-ui.spec.js
@@ -11,7 +11,6 @@ const {
 } = require('./helpers');
 const { buildWebDriver } = require('./webdriver');
 const Ganache = require('./ganache');
-const { ensureXServerIsRunning } = require('./x-server');
 
 const ganacheServer = new Ganache();
 const dappPort = 8080;
@@ -45,12 +44,6 @@ describe('MetaMask', function () {
       dappServer.on('listening', resolve);
       dappServer.on('error', reject);
     });
-    if (
-      process.env.SELENIUM_BROWSER === 'chrome' &&
-      process.env.CI === 'true'
-    ) {
-      await ensureXServerIsRunning();
-    }
     const result = await buildWebDriver();
     driver = result.driver;
     await driver.navigate();
diff --git a/test/e2e/webdriver/firefox.js b/test/e2e/webdriver/firefox.js
index 6bb90b9ab..52e936f09 100644
--- a/test/e2e/webdriver/firefox.js
+++ b/test/e2e/webdriver/firefox.js
@@ -42,6 +42,9 @@ class FirefoxDriver {
       'browser.download.dir',
       `${process.cwd()}/test-artifacts/downloads`,
     );
+    if (process.env.CI === 'true') {
+      options.setBinary('/opt/firefox/firefox');
+    }
     const builder = new Builder()
       .forBrowser('firefox')
       .setFirefoxOptions(options);
diff --git a/test/e2e/x-server.js b/test/e2e/x-server.js
deleted file mode 100644
index 9be32b099..000000000
--- a/test/e2e/x-server.js
+++ /dev/null
@@ -1,17 +0,0 @@
-const { runCommand } = require('../../development/lib/run-command');
-const { retry } = require('../../development/lib/retry');
-
-function ensureXServerIsRunning() {
-  return retry(
-    {
-      retries: 3,
-      delay: 2000,
-      rejectionMessage: 'X server does not seem to be running?!',
-    },
-    () => {
-      return runCommand('xset', ['q']);
-    },
-  );
-}
-
-module.exports = { ensureXServerIsRunning };