diff --git a/backends-velox/src/test/java/org/apache/gluten/test/VeloxBackendTestBase.java b/backends-velox/src/test/java/org/apache/gluten/test/VeloxBackendTestBase.java
index 2f0087608039..1cbaefba8fb8 100644
--- a/backends-velox/src/test/java/org/apache/gluten/test/VeloxBackendTestBase.java
+++ b/backends-velox/src/test/java/org/apache/gluten/test/VeloxBackendTestBase.java
@@ -54,6 +54,7 @@ public MetricRegistry metricRegistry() {
       public SparkConf conf() {
         final SparkConf conf = new SparkConf();
         conf.set(GlutenConfig.COLUMNAR_VELOX_CONNECTOR_IO_THREADS().key(), "0");
+        conf.set(GlutenConfig.SPARK_OFFHEAP_SIZE_KEY(), "1g");
         return conf;
       }