From a6e69a152d404d306708029ed6bf33bbffc588ce Mon Sep 17 00:00:00 2001
From: XenoAmess <xenoamess@gmail.com>
Date: Wed, 6 Jul 2022 02:17:26 +0800
Subject: [PATCH] bugfix for parentVersion wrongly be String "null" when be
 missing and should be null be default

---
 src/main/java/org/codehaus/mojo/versions/UpdateParentMojo.java | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/main/java/org/codehaus/mojo/versions/UpdateParentMojo.java b/src/main/java/org/codehaus/mojo/versions/UpdateParentMojo.java
index 6b53757f3..84d322269 100644
--- a/src/main/java/org/codehaus/mojo/versions/UpdateParentMojo.java
+++ b/src/main/java/org/codehaus/mojo/versions/UpdateParentMojo.java
@@ -53,8 +53,7 @@ public class UpdateParentMojo extends AbstractVersionsUpdaterMojo
      *
      * @since 1.0-alpha-1
      */
-    @Parameter( property = "parentVersion",
-                defaultValue = "null" )
+    @Parameter( property = "parentVersion" )
     protected String parentVersion = null;
 
     /**