diff --git a/dropbox-sdk-java/build.gradle b/dropbox-sdk-java/build.gradle
index ee33ed2b4..ba40e42c8 100644
--- a/dropbox-sdk-java/build.gradle
+++ b/dropbox-sdk-java/build.gradle
@@ -215,18 +215,17 @@ jar {
 }
 
 task jarWithoutOsgi(type: Jar, dependsOn: classes) {
-    classifier 'withoutOsgi'
+    archiveClassifier.set('withoutOsgi')
     from sourceSets.main.output
 }
 
 task sourcesJar(type: Jar, dependsOn: classes) {
-    classifier = 'sources'
+    archiveClassifier.set('sources')
     from sourceSets.main.allSource
 }
 
-
 task javadocJar(type: Jar, dependsOn: javadoc) {
-    classifier = 'javadoc'
+    archiveClassifier.set('javadoc')
     from javadoc.destinationDir
 }