diff --git a/pom.xml b/pom.xml
index 93fdd01..c668586 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
 
   <groupId>io.goobox</groupId>
   <artifactId>goobox-sync-storj</artifactId>
-  <version>0.0.21</version>
+  <version>0.0.22</version>
   <packaging>jar</packaging>
 
   <name>Goobox sync app for Storj</name>
@@ -62,7 +62,7 @@
     <dependency>
       <groupId>io.storj</groupId>
       <artifactId>libstorj-java</artifactId>
-      <version>0.6.2</version>
+      <version>0.7.2</version>
     </dependency>
     <dependency>
       <groupId>net.harawata</groupId>
diff --git a/src/test/java/io/goobox/sync/storj/mocks/StorjMock.java b/src/test/java/io/goobox/sync/storj/mocks/StorjMock.java
index 72dd85d..b43ba49 100644
--- a/src/test/java/io/goobox/sync/storj/mocks/StorjMock.java
+++ b/src/test/java/io/goobox/sync/storj/mocks/StorjMock.java
@@ -122,7 +122,7 @@ public void deleteFile(String bucketId, String fileId, DeleteFileCallback callba
     }
 
     @Mock
-    public void downloadFile(Bucket bucket, File file, DownloadFileCallback callback) throws KeysNotFoundException {
+    public long downloadFile(Bucket bucket, File file, DownloadFileCallback callback) throws KeysNotFoundException {
         if (FILE_1.equals(file)) {
             filesMock.addFile(FileMock.FILE_1);
             callback.onComplete(file.getId(), FileMock.FILE_1.getPath().toString());
@@ -135,10 +135,11 @@ public void downloadFile(Bucket bucket, File file, DownloadFileCallback callback
         } else {
             callback.onError(file.getId(), Storj.STORJ_BRIDGE_FILE_NOTFOUND_ERROR, "error downloading");
         }
+        return 0;
     }
 
     @Mock
-    public void uploadFile(Bucket bucket, String fileName, String localPath, UploadFileCallback callback)
+    public long uploadFile(Bucket bucket, String fileName, String localPath, UploadFileCallback callback)
             throws KeysNotFoundException {
         if (FileMock.FILE_1.getPath().toString().equals(localPath)) {
             if (files.contains(FILE_1)) {
@@ -162,6 +163,7 @@ public void uploadFile(Bucket bucket, String fileName, String localPath, UploadF
         } else {
             callback.onError(localPath, Storj.ENOENT, "error uploading");
         }
+        return 0;
     }
 
     public void modifyFile(File oldFile, File newFile) {