diff --git a/.github/workflows/linux-wpt.yml b/.github/workflows/linux-wpt.yml
index 0be8f5e68bb..79d7a6aabe6 100644
--- a/.github/workflows/linux-wpt.yml
+++ b/.github/workflows/linux-wpt.yml
@@ -80,6 +80,7 @@ jobs:
           mkdir -p wpt-full-logs/linux
           ./mach test-wpt \
             $WPT_ALWAYS_SUCCEED_ARG \
+            --product servodriver --headless \
             --${{ inputs.profile }} --processes $(nproc) --timeout-multiplier 2 \
             --total-chunks ${{ inputs.number-of-wpt-chunks }} --this-chunk ${{ matrix.chunk_id }} \
             --log-raw wpt-full-logs/linux/raw/${{ matrix.chunk_id }}.log \
diff --git a/.github/workflows/mac-wpt.yml b/.github/workflows/mac-wpt.yml
index 3b8e89b9386..caa5bdb0f89 100644
--- a/.github/workflows/mac-wpt.yml
+++ b/.github/workflows/mac-wpt.yml
@@ -51,6 +51,7 @@ jobs:
           mkdir -p wpt-filtered-logs/macos
           mkdir -p wpt-full-logs/macos
           ./mach test-wpt \
+            --product servodriver --headless \
             --${{ inputs.profile }} --processes $(sysctl -n hw.logicalcpu) --timeout-multiplier 8 \
             --total-chunks ${{ env.max_chunk_id }} --this-chunk ${{ matrix.chunk_id }} \
             --log-raw wpt-full-logs/macos/${{ matrix.chunk_id }}.log \