diff --git a/bulk-model-sync-gradle/build.gradle.kts b/bulk-model-sync-gradle/build.gradle.kts
index 72a08f4cfc..69c9249f11 100644
--- a/bulk-model-sync-gradle/build.gradle.kts
+++ b/bulk-model-sync-gradle/build.gradle.kts
@@ -3,6 +3,14 @@ plugins {
     `java-gradle-plugin`
 }
 
+tasks.test {
+    javaLauncher.set(
+        javaToolchains.launcherFor {
+            languageVersion.set(JavaLanguageVersion.of(21))
+        },
+    )
+}
+
 dependencies {
     implementation(project(":model-client", "jvmRuntimeElements"))
     implementation(project(":bulk-model-sync-lib"))