diff --git a/compiler/tests-ir-jvm/build.gradle.kts b/compiler/tests-ir-jvm/build.gradle.kts
index 7beea0fcfe5..760fdde8c35 100644
--- a/compiler/tests-ir-jvm/build.gradle.kts
+++ b/compiler/tests-ir-jvm/build.gradle.kts
@@ -18,4 +18,5 @@ sourceSets {
 
 projectTest {
     workingDir = rootDir
+    maxParallelForks = Math.max(Runtime.getRuntime().availableProcessors() / 2, 1)
 }