Fix site generation
diff --git a/pom.xml b/pom.xml
index 2af0f51..ce8aced 100644
--- a/pom.xml
+++ b/pom.xml
@@ -39,6 +39,7 @@
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <project.build.outputTimestamp>1698151225</project.build.outputTimestamp>
+    <maven.compiler.release>11</maven.compiler.release>
 
     <jakarta-jsonp-api.version>2.1.1</jakarta-jsonp-api.version>
     <jakarta-jsonb-api.version>3.0.0</jakarta-jsonb-api.version>
@@ -205,7 +206,6 @@
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
         <configuration>
-          <release>11</release>
           <encoding>${project.build.sourceEncoding}</encoding>
           <showDeprecation>true</showDeprecation>
           <showWarnings>true</showWarnings>