Update parent POM version.
diff --git a/pom.xml b/pom.xml
index 560d031..46726e9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.apache</groupId>
         <artifactId>apache</artifactId>
-        <version>17</version>
+        <version>20</version>
     </parent>
 
     <groupId>org.apache.rampart</groupId>