diff --git a/build.gradle b/build.gradle
index 962750d..fb11f0c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,7 +8,7 @@
 apply plugin: 'java-library'
 
 group = 'org.dita.pdf2'
-version = '3.6.2'
+version = '3.6.3'
 description = """DITA Open Toolkit PDF plug-in for RenderX."""
 
 repositories {
diff --git a/plugin.xml b/plugin.xml
index 8b0d0c0..42ad61d 100644
--- a/plugin.xml
+++ b/plugin.xml
@@ -16,6 +16,7 @@ See the accompanying LICENSE file for applicable license.
     <param name="pdf.formatter" desc="Specifies the XSL processor." type="enum">
       <val desc="RenderX XEP Engine">xep</val>
     </param>
+    <param name="xep.dir" desc="RenderX installation directory." type="file"/>
     <param name="custom.xep.config" desc="Specifies the user configuration file for RenderX." type="file"/>
     <param name="maxJavaMemory" desc="Specifies the amount of memory allocated to the RenderX process."/>
   </transtype>