diff --git a/.github/workflows/check-e2e.yml b/.github/workflows/check-e2e.yml
index 70e4f4fe3..322e3180e 100644
--- a/.github/workflows/check-e2e.yml
+++ b/.github/workflows/check-e2e.yml
@@ -12,7 +12,10 @@ jobs:
     continue-on-error: true
     strategy:
       matrix:
-        browser: [chromium, firefox, visual, heartwood]
+        # Disable firefox until this is fixed upstream:
+        # https://github.com/microsoft/playwright/issues/21145
+        # browser: [chromium, firefox, visual, heartwood]
+        browser: [chromium, visual, heartwood]
     timeout-minutes: 30
     runs-on: ubuntu-latest
     steps: