[MPMD-302] - Upgrade to PMD 6.26.0
diff --git a/pom.xml b/pom.xml
index a4ee08c..70efea8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -89,7 +89,7 @@
     <doxiaVersion>1.9.1</doxiaVersion>
     <doxiaSitetoolsVersion>1.9.2</doxiaSitetoolsVersion>
     <javaVersion>7</javaVersion><!-- Because PMD 5.4+ requires Java 7 -->
-    <pmdVersion>6.23.0</pmdVersion>
+    <pmdVersion>6.26.0</pmdVersion>
     <sitePluginVersion>3.7.1</sitePluginVersion>
     <projectInfoReportsPluginVersion>3.0.0</projectInfoReportsPluginVersion>
     <project.build.outputTimestamp>2020-04-07T21:04:00Z</project.build.outputTimestamp>
@@ -125,6 +125,12 @@
 
     <!-- pmd -->
     <dependency>
+        <groupId>org.apache.commons</groupId>
+        <artifactId>commons-text</artifactId>
+        <!-- overwrite version from pmd-core. 1.3 is still compatible with java7, 1.6 not. -->
+        <version>1.3</version>
+    </dependency>
+    <dependency>
       <groupId>net.sourceforge.pmd</groupId>
       <artifactId>pmd-core</artifactId>
       <version>${pmdVersion}</version>
diff --git a/src/site/apt/examples/upgrading-PMD-at-runtime.apt.vm b/src/site/apt/examples/upgrading-PMD-at-runtime.apt.vm
index a7d6c02..74266c1 100644
--- a/src/site/apt/examples/upgrading-PMD-at-runtime.apt.vm
+++ b/src/site/apt/examples/upgrading-PMD-at-runtime.apt.vm
@@ -88,7 +88,7 @@
 *--------------------------------------------------------------------------------*--------------------------------------------------*
 | <<maven-pmd-plugin>>                                                           | <<PMD>>                                          |
 *--------------------------------------------------------------------------------*--------------------------------------------------*
-| {{{https://maven.apache.org/plugins-archives/maven-pmd-plugin-3.14.0/}3.14.0}} | {{{https://pmd.github.io/pmd-6.23.0/}6.23.0}}    |
+| {{{https://maven.apache.org/plugins-archives/maven-pmd-plugin-3.14.0/}3.14.0}} | {{{https://pmd.github.io/pmd-6.26.0/}6.26.0}}    |
 *--------------------------------------------------------------------------------*--------------------------------------------------*
 | {{{https://maven.apache.org/plugins-archives/maven-pmd-plugin-3.13.0/}3.13.0}} | {{{https://pmd.github.io/pmd-6.21.0/}6.21.0}}    |
 *--------------------------------------------------------------------------------*--------------------------------------------------*