diff --git a/src/main/java/org/gradle/playframework/plugins/PlayApplicationPlugin.java b/src/main/java/org/gradle/playframework/plugins/PlayApplicationPlugin.java
index 14546c33..8ba1df8c 100644
--- a/src/main/java/org/gradle/playframework/plugins/PlayApplicationPlugin.java
+++ b/src/main/java/org/gradle/playframework/plugins/PlayApplicationPlugin.java
@@ -125,7 +125,7 @@ private void configureJavaAndScalaSourceSet(Project project) {
     private TaskProvider<Jar> createAssetsJarTask(Project project) {
         TaskProvider<Jar> assetsJarTask = project.getTasks().register(ASSETS_JAR_TASK_NAME, Jar.class, jar -> {
             jar.setDescription("Assembles the assets jar for the application.");
-            jar.setClassifier("assets");
+            jar.getArchiveClassifier().set("assets");
             jar.from(project.file("public"), copySpec -> copySpec.into("public"));
         });