diff --git a/gsyVideoPlayer-java/bintray.gradle b/gsyVideoPlayer-java/bintray.gradle
index 1216148de..ee9d8919a 100644
--- a/gsyVideoPlayer-java/bintray.gradle
+++ b/gsyVideoPlayer-java/bintray.gradle
@@ -24,6 +24,7 @@ task javadocJar(type: Jar, dependsOn: javadoc) {
 javadoc {
     options{
         encoding "UTF-8"
+        docEncoding "UTF-8"
         charSet 'UTF-8'
         author true
         version true
diff --git a/gsyVideoPlayer/bintray.gradle b/gsyVideoPlayer/bintray.gradle
index 1216148de..ee9d8919a 100644
--- a/gsyVideoPlayer/bintray.gradle
+++ b/gsyVideoPlayer/bintray.gradle
@@ -24,6 +24,7 @@ task javadocJar(type: Jar, dependsOn: javadoc) {
 javadoc {
     options{
         encoding "UTF-8"
+        docEncoding "UTF-8"
         charSet 'UTF-8'
         author true
         version true
diff --git a/gsyvideoplayer-androidvideocache/bintray.gradle b/gsyvideoplayer-androidvideocache/bintray.gradle
index 1216148de..ee9d8919a 100644
--- a/gsyvideoplayer-androidvideocache/bintray.gradle
+++ b/gsyvideoplayer-androidvideocache/bintray.gradle
@@ -24,6 +24,7 @@ task javadocJar(type: Jar, dependsOn: javadoc) {
 javadoc {
     options{
         encoding "UTF-8"
+        docEncoding "UTF-8"
         charSet 'UTF-8'
         author true
         version true
diff --git a/gsyvideoplayer-exo2/bintray.gradle b/gsyvideoplayer-exo2/bintray.gradle
index 1216148de..ee9d8919a 100644
--- a/gsyvideoplayer-exo2/bintray.gradle
+++ b/gsyvideoplayer-exo2/bintray.gradle
@@ -24,6 +24,7 @@ task javadocJar(type: Jar, dependsOn: javadoc) {
 javadoc {
     options{
         encoding "UTF-8"
+        docEncoding "UTF-8"
         charSet 'UTF-8'
         author true
         version true