diff --git a/app/build.gradle b/app/build.gradle
index 3026d74..10c011d 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -31,8 +31,8 @@ dependencies {
     implementation "com.android.support:design:${SUPPORT_LIB_VERSION}"
     implementation 'com.android.support.constraint:constraint-layout:1.0.2'
     testImplementation 'junit:junit:4.12'
-    implementation project(':library')
-//    implementation 'com.github.Justson:Downloader:v4.1.8'
+//    implementation project(':library')
+    implementation 'com.github.Justson:Downloader:v4.2.0'
     implementation 'com.github.Justson.AgentWeb:agentweb:v4.1.8'
     implementation 'com.squareup.picasso:picasso:2.71828'
     implementation 'com.liulishuo.filedownloader:library:1.7.4'