diff --git a/cas-client-core/src/main/java/org/jasig/cas/client/validation/InvalidProxyChainTicketValidationException.java b/cas-client-core/src/main/java/org/jasig/cas/client/validation/InvalidProxyChainTicketValidationException.java
index ada932d..3d0d0e3 100644
--- a/cas-client-core/src/main/java/org/jasig/cas/client/validation/InvalidProxyChainTicketValidationException.java
+++ b/cas-client-core/src/main/java/org/jasig/cas/client/validation/InvalidProxyChainTicketValidationException.java
@@ -10,6 +10,11 @@ package org.jasig.cas.client.validation;
 public final class InvalidProxyChainTicketValidationException extends TicketValidationException {
 
     /**
+	 * Unique Id for Serialization
+	 */
+	private static final long serialVersionUID = -7736653266370691534L;
+
+	/**
      * Constructs an exception with the supplied message.
      * @param string the supplied message.
      */
diff --git a/cas-client-core/src/main/java/org/jasig/cas/client/validation/TicketValidationException.java b/cas-client-core/src/main/java/org/jasig/cas/client/validation/TicketValidationException.java
index c2e6ca2..7e7d29f 100644
--- a/cas-client-core/src/main/java/org/jasig/cas/client/validation/TicketValidationException.java
+++ b/cas-client-core/src/main/java/org/jasig/cas/client/validation/TicketValidationException.java
@@ -10,7 +10,12 @@ package org.jasig.cas.client.validation;
 public class TicketValidationException extends Exception {
 
     /**
-     * Constructs an exception with the supplied messsage.
+	 * Unique Id for Serialization
+	 */
+	private static final long serialVersionUID = -7036248720402711806L;
+
+	/**
+     * Constructs an exception with the supplied message.
      *
      * @param string the message
      */