diff --git a/test/detect/index.js b/test/detect/index.js
index cc317e2e9f..4f77e09050 100644
--- a/test/detect/index.js
+++ b/test/detect/index.js
@@ -33,7 +33,8 @@ function testAutoDetection(language, { detectPath }) {
 
 describe('hljs.highlightAuto()', () => {
   before(async function() {
-    const thirdPartyPackages = await getThirdPartyPackages();
+    const thirdPartyPackages = [];
+    for await(const pkg of getThirdPartyPackages()) thirdPartyPackages.push(pkg);
 
     const languages = hljs.listLanguages();
     describe(`hljs.highlightAuto()`, function() {
diff --git a/test/markup/index.js b/test/markup/index.js
index f653976082..7c96049fe9 100644
--- a/test/markup/index.js
+++ b/test/markup/index.js
@@ -50,12 +50,11 @@ describe('highlight() markup', async() => {
       languages.forEach(testLanguage);
     }
 
-    const thirdPartyPackages = await getThirdPartyPackages();
-    thirdPartyPackages.forEach(
-      (pkg) => pkg.names.forEach(
+    for await(const pkg of getThirdPartyPackages()) {
+      pkg.names.forEach(
         (name, idx) => testLanguage(name, { testDir: pkg.markupTestPaths[idx] })
-      )
-    );
+      );
+    }
   });
 
   it("adding dynamic tests...", async function() {}); // this is required to work