diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 946ba81d..9cdf6e8d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -18,6 +18,11 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+      - name: Setup firefox
+        uses: browser-actions/setup-firefox@latest
+        with:
+          firefox-version: latest-devedition
+      - run: firefox --version
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v2
         with: