diff --git a/pom.xml b/pom.xml
index 16dc5bde..ed3a45e8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -208,7 +208,7 @@
         <javadocPluginVersion>3.10.1</javadocPluginVersion>
         <pluginPluginVersion>3.15.0</pluginPluginVersion>
         <scmPluginVersion>2.1.0</scmPluginVersion>
-        <sitePluginVersion>3.12.1</sitePluginVersion>
+        <sitePluginVersion>3.21.0</sitePluginVersion>
         <versionsPluginVersion>2.17.1</versionsPluginVersion>
 
         <spotbugsTestDebug>false</spotbugsTestDebug>