diff --git a/native/native.tests/build.gradle.kts b/native/native.tests/build.gradle.kts
index 2a7b269..55d54aa 100644
--- a/native/native.tests/build.gradle.kts
+++ b/native/native.tests/build.gradle.kts
@@ -72,7 +72,7 @@
 fun nativeTest(taskName: String, vararg tags: String) = projectTest(
     taskName,
     jUnitMode = JUnitMode.JUnit5,
-    maxHeapSizeMb = 6 * 1024 // Extra heap space for Kotlin/Native compiler.
+    maxHeapSizeMb = 3072 // Extra heap space for Kotlin/Native compiler.
 ) {
     group = "verification"