diff --git a/build.gradle.kts b/build.gradle.kts
index 1ded15ee2f7..fc5fed61b81 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -324,6 +324,7 @@ allprojects {
     val commonCompilerArgs = listOfNotNull(
         "-Xallow-kotlin-package",
         "-Xread-deserialized-contracts",
+        "-Xjvm-default=compatibility",
         "-Xprogressive".takeIf { hasProperty("test.progressive.mode") } // TODO: change to "-progressive" after bootstrap
     )
 
@@ -750,6 +751,7 @@ fun Project.configureJvmProject(javaHome: String, javaVersion: String) {
     tasks.withType<KotlinCompile> {
         kotlinOptions.jdkHome = javaHome
         kotlinOptions.jvmTarget = javaVersion
+        kotlinOptions.freeCompilerArgs += "-Xjvm-default=compatibility"
     }
 
     tasks.withType<Test> {