diff --git a/IOIOLibCore/build.gradle b/IOIOLibCore/build.gradle
index 96c262f0..e505ccca 100644
--- a/IOIOLibCore/build.gradle
+++ b/IOIOLibCore/build.gradle
@@ -13,12 +13,12 @@ javadoc {
 }
 
 task javadocJar(type: Jar) {
-    classifier = 'javadoc'
+    archiveClassifier = 'javadoc'
     from javadoc
 }
 
 task sourcesJar(type: Jar) {
-    classifier = 'sources'
+    archiveClassifier = 'sources'
     from sourceSets.main.allSource
 }
 
diff --git a/IOIOLibPC/build.gradle b/IOIOLibPC/build.gradle
index ff647a80..d44ceffb 100644
--- a/IOIOLibPC/build.gradle
+++ b/IOIOLibPC/build.gradle
@@ -6,12 +6,12 @@ javadoc {
 }
 
 task javadocJar(type: Jar) {
-    classifier = 'javadoc'
+    archiveClassifier = 'javadoc'
     from javadoc
 }
 
 task sourcesJar(type: Jar) {
-    classifier = 'sources'
+    archiveClassifier = 'sources'
     from sourceSets.main.allSource
 }