diff --git a/okio/build.gradle.kts b/okio/build.gradle.kts
index 9d7d49689e..7142b4978b 100644
--- a/okio/build.gradle.kts
+++ b/okio/build.gradle.kts
@@ -229,7 +229,7 @@ tasks {
   }
 
   named<Jar>("jvmJar") {
-    from(compileJava9Java) {
+    from(compileJava9Java.flatMap { it.destinationDirectory }) {
       into("META-INF/versions/9")
     }
     val bndExtension = BundleTaskExtension(this)