diff --git a/pcollections/pom.xml b/pcollections/pom.xml
index 5286d53c..cd254335 100644
--- a/pcollections/pom.xml
+++ b/pcollections/pom.xml
@@ -33,7 +33,7 @@ PCollections (https://pcollections.org/) types
   </contributors>
 
   <properties>
-    <version.pcollections>2.1.2</version.pcollections>
+    <version.pcollections>4.0.1</version.pcollections>
 
     <!-- Generate PackageVersion.java into this directory. -->
     <packageVersion.dir>com/fasterxml/jackson/datatype/pcollections</packageVersion.dir>
diff --git a/release-notes/VERSION-2.x b/release-notes/VERSION-2.x
index 91dff4e3..9183dd4e 100644
--- a/release-notes/VERSION-2.x
+++ b/release-notes/VERSION-2.x
@@ -26,8 +26,9 @@ Active Maintainers:
  (contributed by Joo-Hyuk K)
 #117: (guava) `ImmutableRangeSet` fails to deserialize without explicit deserializer
  (contributed by Joo-Hyuk K)
-#122: PCollections module info (`module-info.class`) incorrect
+#122: PCollections module info (`module-info.class`) incorrect: update to 4.0.1
  (reported by Ethan M)
+ 
 
 2.15.3 (12-Oct-2023)
 2.15.2 (30-May-2023)