diff --git a/test/integration/pick-tests.js b/test/integration/pick-tests.js
index 4012bcd..f8f1463 100644
--- a/test/integration/pick-tests.js
+++ b/test/integration/pick-tests.js
@@ -103,4 +103,9 @@ const runFile = async (file, action, page, script) => {
 
     // close the browser window we used
     await browser.close();
-})();
+})().catch(err => {
+    // Handle promise rejections by exiting with a nonzero code to ensure that tests don't erroneously pass
+    // eslint-disable-next-line no-console
+    console.error(err);
+    process.exit(1);
+});
diff --git a/test/integration/scratch-tests.js b/test/integration/scratch-tests.js
index bad0774..c67e559 100644
--- a/test/integration/scratch-tests.js
+++ b/test/integration/scratch-tests.js
@@ -117,4 +117,9 @@ const testFile = (file, page) => test(file, async t => {
 
     // close the browser window we used
     await browser.close();
-})();
+})().catch(err => {
+    // Handle promise rejections by exiting with a nonzero code to ensure that tests don't erroneously pass
+    // eslint-disable-next-line no-console
+    console.error(err);
+    process.exit(1);
+});