diff --git a/build.xml b/build.xml
index 51ff047f0..179be527e 100644
--- a/build.xml
+++ b/build.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <project name="com.trollworks.gcs" default="bundle" xmlns:if="ant:if" xmlns:unless="ant:unless">
 	<property name="module.name" value="com.trollworks.gcs"/>
-	<property name="module.version" value="4.13.0"/>
+	<property name="module.version" value="4.13.1"/>
     <property name="app.name" value="GURPS Character Sheet"/>
     <property name="app.name.short" value="GCS"/>
     <property name="exe.name" value="gcs"/>
@@ -57,7 +57,7 @@
 			<fileset dir="${modules.dir}" includes="${module.name}*"/>
 		</delete>
 
-        <javac destdir="${build.dir}" includeantruntime="false" source="${target.version}" target="${target.version}" modulepath="${modules.dir}" encoding="UTF8">
+        <javac destdir="${build.dir}" includeantruntime="false" modulepath="${modules.dir}" encoding="UTF8" release="${target.version}">
             <src path="src"/>
         </javac>