3 files changed, 3 insertions, 0 deletions
diff --git a/sources/utils/VSClassLoader.java b/sources/utils/VSClassLoader.java
index 75ad994..60b3c9d 100644
--- a/sources/utils/VSClassLoader.java
+++ b/sources/utils/VSClassLoader.java
@@ -11,6 +11,7 @@ package utils;
  * The Class VSClassLoader.
  */
 public class VSClassLoader extends ClassLoader {
+    private static final long serialVersionUID = 1L;
 
     /**
      * New instance.
diff --git a/sources/utils/VSTools.java b/sources/utils/VSTools.java
index e4db8e1..3423fe5 100644
--- a/sources/utils/VSTools.java
+++ b/sources/utils/VSTools.java
@@ -10,6 +10,7 @@ package utils;
  * The Class VSTools.
  */
 public final class VSTools {
+    private static final long serialVersionUID = 1L;
 
     /**
      * Gets the time string.
diff --git a/sources/utils/VSTupel.java b/sources/utils/VSTupel.java
index 2177601..144b981 100644
--- a/sources/utils/VSTupel.java
+++ b/sources/utils/VSTupel.java
@@ -8,6 +8,7 @@ package utils;
  * The Class VSTupel.
  */
 public final class VSTupel<A,B,C> {
+    private static final long serialVersionUID = 1L;
 
     /** The a. */
     private A a;