diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6cd9f858e..e15465488 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -31,8 +31,9 @@ jobs:
       run: |
         npm run lint
 
-        npm run test-headless -- --chrome $(which google-chrome-stable) --allow-chrome-as-root
-        npm run test-webworker -- --chrome $(which google-chrome-stable) --allow-chrome-as-root
+        export SINON_CHROME_BIN=$(which google-chrome-stable)
+        npm run test-headless -- --chrome $SINON_CHROME_BIN --allow-chrome-as-root
+        npm run test-webworker -- --chrome $SINON_CHROME_BIN --allow-chrome-as-root
         npm run test-esm-bundle
       if: matrix.node-version == 10