diff --git a/RELEASE-NOTES.html b/RELEASE-NOTES.html
index fd4a5667b..8272ea1ee 100644
--- a/RELEASE-NOTES.html
+++ b/RELEASE-NOTES.html
@@ -103,6 +103,7 @@ If this causes major headaches to anyone please contact commons-dev at jakarta.a
 <li>IteratorChain.remove() - Fix to avoid IllegalStateException when one of the underlying iterators is a FilterIterator [34267]</li>
 <li>ExtendedProperties.convertProperties() - Fix to handle default properties maps correctly [32204]</li>
 <li>Add casts to avoid some JDK1.5 compilation warnings [35474]</li>
+<li>Make serialization version ids private [37106]</li>
 </ul>
 
 <center><h3>JAVADOC</h3></center>
diff --git a/src/java/org/apache/commons/collections/bag/HashBag.java b/src/java/org/apache/commons/collections/bag/HashBag.java
index 5e1b765e5..a4ec94442 100644
--- a/src/java/org/apache/commons/collections/bag/HashBag.java
+++ b/src/java/org/apache/commons/collections/bag/HashBag.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright 2002-2004 The Apache Software Foundation
+ *  Copyright 2002-2005 The Apache Software Foundation
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -44,7 +44,7 @@ public class HashBag
         extends AbstractMapBag implements Bag, Serializable {
 
     /** Serial version lock */
-    static final long serialVersionUID = -6561115435802554013L;
+    private static final long serialVersionUID = -6561115435802554013L;
     
     /**
      * Constructs an empty <code>HashBag</code>.
diff --git a/src/java/org/apache/commons/collections/bag/TreeBag.java b/src/java/org/apache/commons/collections/bag/TreeBag.java
index 1af943a24..7dc94cc13 100644
--- a/src/java/org/apache/commons/collections/bag/TreeBag.java
+++ b/src/java/org/apache/commons/collections/bag/TreeBag.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright 2002-2004 The Apache Software Foundation
+ *  Copyright 2002-2005 The Apache Software Foundation
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -49,7 +49,7 @@ public class TreeBag
         extends AbstractMapBag implements SortedBag, Serializable {
 
     /** Serial version lock */
-    static final long serialVersionUID = -7740146511091606676L;
+    private static final long serialVersionUID = -7740146511091606676L;
     
     /**
      * Constructs an empty <code>TreeBag</code>.
diff --git a/src/java/org/apache/commons/collections/list/NodeCachingLinkedList.java b/src/java/org/apache/commons/collections/list/NodeCachingLinkedList.java
index 059b6b889..77b596aa5 100644
--- a/src/java/org/apache/commons/collections/list/NodeCachingLinkedList.java
+++ b/src/java/org/apache/commons/collections/list/NodeCachingLinkedList.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright 2001-2004 The Apache Software Foundation
+ *  Copyright 2001-2005 The Apache Software Foundation
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -46,7 +46,7 @@ import java.util.Collection;
 public class NodeCachingLinkedList extends AbstractLinkedList implements Serializable {
 
     /** Serialization version */
-    static final long serialVersionUID = 6897789178562232073L;
+    private static final long serialVersionUID = 6897789178562232073L;
 
     /**
      * The default value for {@link #maximumCacheSize}.
diff --git a/src/java/org/apache/commons/collections/map/LRUMap.java b/src/java/org/apache/commons/collections/map/LRUMap.java
index 72553c850..13b04725f 100644
--- a/src/java/org/apache/commons/collections/map/LRUMap.java
+++ b/src/java/org/apache/commons/collections/map/LRUMap.java
@@ -1,5 +1,5 @@
 /*
- *  Copyright 2001-2004 The Apache Software Foundation
+ *  Copyright 2001-2005 The Apache Software Foundation
  *
  *  Licensed under the Apache License, Version 2.0 (the "License");
  *  you may not use this file except in compliance with the License.
@@ -59,7 +59,7 @@ public class LRUMap
         extends AbstractLinkedMap implements BoundedMap, Serializable, Cloneable {
     
     /** Serialisation version */
-    static final long serialVersionUID = -612114643488955218L;
+    private static final long serialVersionUID = -612114643488955218L;
     /** Default maximum size */
     protected static final int DEFAULT_MAX_SIZE = 100;