diff --git a/test/fixtures/workload/grow-worker-and-set-near-heap-limit.js b/test/fixtures/workload/grow-worker-and-set-near-heap-limit.js
index 598088bcf90a78..b7a379e24b4d1c 100644
--- a/test/fixtures/workload/grow-worker-and-set-near-heap-limit.js
+++ b/test/fixtures/workload/grow-worker-and-set-near-heap-limit.js
@@ -9,7 +9,10 @@ new Worker(path.join(__dirname, 'grow-and-set-near-heap-limit.js'), {
   },
   resourceLimits: {
     maxOldGenerationSizeMb:
-      parseInt(process.env.TEST_OLD_SPACE_SIZE) || 20
-  }
+      parseInt(process.env.TEST_OLD_SPACE_SIZE) || 20,
+    ...(process.env.TEST_YOUNG_SPACE_SIZE !== undefined && {
+      maxYoungGenerationSizeMb: parseInt(process.env.TEST_YOUNG_SPACE_SIZE),
+    }),
+  },
 });
 
diff --git a/test/fixtures/workload/grow-worker.js b/test/fixtures/workload/grow-worker.js
index 092d8f27751fc2..c80a5cd7b91128 100644
--- a/test/fixtures/workload/grow-worker.js
+++ b/test/fixtures/workload/grow-worker.js
@@ -9,6 +9,9 @@ new Worker(path.join(__dirname, 'grow.js'), {
   ],
   resourceLimits: {
     maxOldGenerationSizeMb:
-      parseInt(process.env.TEST_OLD_SPACE_SIZE) || 20
-  }
+      parseInt(process.env.TEST_OLD_SPACE_SIZE) || 20,
+    ...(process.env.TEST_YOUNG_SPACE_SIZE !== undefined && {
+      maxYoungGenerationSizeMb: parseInt(process.env.TEST_YOUNG_SPACE_SIZE),
+    }),
+  },
 });
diff --git a/test/parallel/test-heapsnapshot-near-heap-limit-by-api-in-worker.js b/test/parallel/test-heapsnapshot-near-heap-limit-by-api-in-worker.js
index ac55933a47122b..b7f4946c060cff 100644
--- a/test/parallel/test-heapsnapshot-near-heap-limit-by-api-in-worker.js
+++ b/test/parallel/test-heapsnapshot-near-heap-limit-by-api-in-worker.js
@@ -22,6 +22,7 @@ const env = {
     env: {
       TEST_SNAPSHOTS: 1,
       TEST_OLD_SPACE_SIZE: 50,
+      TEST_YOUNG_SPACE_SIZE: 16,
       ...env
     }
   });
diff --git a/test/parallel/test-heapsnapshot-near-heap-limit-worker.js b/test/parallel/test-heapsnapshot-near-heap-limit-worker.js
index 46744cbd44d82c..2701499c53bfbd 100644
--- a/test/parallel/test-heapsnapshot-near-heap-limit-worker.js
+++ b/test/parallel/test-heapsnapshot-near-heap-limit-worker.js
@@ -20,6 +20,7 @@ const env = {
     env: {
       TEST_SNAPSHOTS: 1,
       TEST_OLD_SPACE_SIZE: 50,
+      TEST_YOUNG_SPACE_SIZE: 16,
       ...env
     }
   });