diff --git a/IPAddress/build.xml b/IPAddress/build.xml
index b7d3acc7..df7b0448 100644
--- a/IPAddress/build.xml
+++ b/IPAddress/build.xml
@@ -1,6 +1,6 @@
 <project name="Create IP Address API" default="run" basedir=".">
 	<description>Create IP address jar</description>
-	<property name="version" value="5.2.0"/>
+	<property name="version" value="5.2.1"/>
 		
 	<property name="rootOffset" value="."/>
 	<property name="rootdistdir" location="${rootOffset}/dist"/>
diff --git a/IPAddress/dist/IPAddress.jar b/IPAddress/dist/IPAddress.jar
index 8b304b97..ebb54bd9 100644
Binary files a/IPAddress/dist/IPAddress.jar and b/IPAddress/dist/IPAddress.jar differ
diff --git a/IPAddress/maintenance_instructions.txt b/IPAddress/maintenance_instructions.txt
index 37292de3..f58f268a 100644
--- a/IPAddress/maintenance_instructions.txt
+++ b/IPAddress/maintenance_instructions.txt
@@ -80,11 +80,13 @@ B Github
 
 1. Edit the release "version" property in build.xml
 
-2. Edit the release property in pom.xml
+2. Edit the release "version" property in pom.xml
 
 3. Use build.xml to first "create javadoc", then after to "create dist jar" and replace the checked-in file IPAddress.jar with the dist jar created.
 NOTE: Currently we have had to separate javadoc creation from the creation of dist jar or maven, see notes in build.xml for the reason.
-So, create the javadoc first using Java 8.  Then switch over to creating the dist jar with java 9 in the same JVM as Eclipse, otherwise ant won't work.
+You need the project at compile level 9 with a jre >= 9 (last time used 11).
+Create the javadoc first using Java 8, altering the jdk used by the build.xml ant build run config to be version 8.  
+Then switch over the job to jre >= 9.  Then create the dist jar with java 9 in the same JVM as Eclipse, otherwise ant won't work.
 
 4. Check in and push the changes.
 
diff --git a/IPAddress/pom.xml b/IPAddress/pom.xml
index 6319f29e..6d15cdb5 100644
--- a/IPAddress/pom.xml
+++ b/IPAddress/pom.xml
@@ -6,7 +6,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/ma
 
   <groupId>com.github.seancfoley</groupId>
   <artifactId>ipaddress</artifactId>
-  <version>5.2.0</version>
+  <version>5.2.1</version>
   <packaging>jar</packaging>
 
   <name>IPAddress</name>