update pmd plugin.

diff --git a/config/pmd/pmdrules.xml b/config/pmd/pmdrules.xml
index ccc7751..cb3d435 100644 (file)
--- a/config/pmd/pmdrules.xml
+++ b/config/pmd/pmdrules.xml
@@ -2,7 +2,7 @@
 
 <!--
     Custom rule set
-    for PMD [ https://pmd.github.io/ ] 6.13.0 or later
+    for PMD [ https://pmd.github.io/ ] 6.21.0 or later
 
     Copyright(c) 2019 olyutorskii
 -->
@@ -11,7 +11,7 @@
   xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0
-  http://pmd.sourceforge.net/ruleset_2_0_0.xsd"
+  https://pmd.sourceforge.io/ruleset_2_0_0.xsd"
   name="Custom ruleset"
 >
 

diff --git a/pom.xml b/pom.xml
index edd4ce2..4dd5c1b 100644 (file)
--- a/pom.xml
+++ b/pom.xml
@@ -238,7 +238,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-pmd-plugin</artifactId>
-                    <version>3.12.0</version>
+                    <version>3.13.0</version>
                 </plugin>
 
                 <plugin>