--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/flowdepth/WstInfo.java	Fri Feb 09 18:07:22 2018 +0100
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/flowdepth/WstInfo.java	Tue Feb 13 14:53:23 2018 +0100
@@ -9,13 +9,19 @@
  */
 package org.dive4elements.river.artifacts.sinfo.flowdepth;
 
+import java.io.Serializable;
+
 /**
  * @author Gernot Belger
  */
-final class WstInfo {
+final class WstInfo implements Serializable {
+
+    private static final long serialVersionUID = 1L;
 
     private final String label;
+
     private final int year;
+
     private final String gauge;
 
     public WstInfo(final String label, final int year, final String gauge) {