diff --git a/.github/workflows/check-a11y-of-changed-content.yaml b/.github/workflows/check-a11y-of-changed-content.yaml
index 783b86c6ce..a36a57bf7e 100644
--- a/.github/workflows/check-a11y-of-changed-content.yaml
+++ b/.github/workflows/check-a11y-of-changed-content.yaml
@@ -57,14 +57,20 @@ jobs:
       - name: Install NPM dependencies
         run: npm ci
 
+      - name: Setup Chrome
+        uses: browser-actions/setup-chrome@v1
+        id: setup-chrome
+
+      - name: Log Chrome setup info
+        run: |
+          echo Installed chromium version: ${{ steps.setup-chrome.outputs.chrome-version }}
+          ${{ steps.setup-chrome.outputs.chrome-path }} --version
+
       - name: Wait for blog to be running
         run: npx wait-on http://127.0.0.1:4000 --timeout 60000
 
       - name: Find out what’s running on which ports
         run: sudo netstat -lp
 
-      - name: Run pa11y (for debugging)
-        run: npx pa11y https://blog.scottlogic.com --debug
-
       - name: Run pa11y-ci
-        run: npx pa11y-ci
+        run: CHROMIUM_BIN=$(which chrome) npx pa11y-ci
diff --git a/.pa11yci.js b/.pa11yci.js
index 3a532c824d..1a096daa75 100644
--- a/.pa11yci.js
+++ b/.pa11yci.js
@@ -1,12 +1,17 @@
 const relativeUrls = require('./pa11y-ci-urls');
 
+const chromiumBin = process.env.CHROMIUM_BIN;
+if (!chromiumBin) {
+  throw new Error('CHROME_BIN environment variable is not set');
+}
+
 const baseUrl = 'http://localhost:4000';
 
 module.exports = {
   defaults: {
     concurrency: 1,
     chromeLaunchConfig: {
-      executablePath: '/usr/bin/google-chrome',
+      executablePath: chromiumBin,
     },
     ignore: [
       'WCAG2AA.Principle1.Guideline1_4.1_4_3.G18.Fail', // colour contrast, which is a known issue