diff --git a/.classpath b/.classpath
index 91f27076b..402e1c708 100644
--- a/.classpath
+++ b/.classpath
@@ -15,6 +15,7 @@
+
diff --git a/src/main/resources/metadata-conf.xml b/src/main/resources/metadata-conf.xml
index ef1f6eb92..bacce915f 100644
--- a/src/main/resources/metadata-conf.xml
+++ b/src/main/resources/metadata-conf.xml
@@ -1,6 +1,6 @@
+ "https://raw.githubusercontent.com/devezhao/persist4j/master/src/main/resources/metadata.dtd">