change dependency version to file 6.0.0
diff --git a/plugin.xml b/plugin.xml
index a73ded4..cd3f03b 100644
--- a/plugin.xml
+++ b/plugin.xml
@@ -29,7 +29,7 @@
     <repo>https://git-wip-us.apache.org/repos/asf/cordova-plugin-file-transfer.git</repo>
     <issue>https://issues.apache.org/jira/browse/CB/component/12320650</issue>
 
-    <dependency id="cordova-plugin-file" version="^5.0.0" />
+    <dependency id="cordova-plugin-file" version="^6.0.0" />
 
     <js-module src="www/FileTransferError.js" name="FileTransferError">
         <clobbers target="window.FileTransferError" />