diff --git a/agent.md b/agent.md
new file mode 100644
index 00000000000..b6f741b16fa
--- /dev/null
+++ b/agent.md
@@ -0,0 +1,13 @@
+# Site generation
+
+## Prerequisites
+- JDK 17+
+- Maven 3.6.3+
+- Access to `https://repo.maven.apache.org/maven2` and `https://central.sonatype.com/repository/maven-snapshots/`
+
+## Generate the site
+
+```bash
+mvn -DskipTests site
+```
+
diff --git a/pom.xml b/pom.xml
index eaadf6807ef..cb15c4fda3e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -94,7 +94,7 @@
3.4.0
3.12.0
3.5.4
- 3.21.0
+ 4.0.0-M16
0.8.14
2.9.1
diff --git a/src/site/resources/css/site.css b/src/site/resources/css/site.css
index 77419daef5c..f6239d4e17a 100644
--- a/src/site/resources/css/site.css
+++ b/src/site/resources/css/site.css
@@ -7,4 +7,5 @@ a.externalLink[href$=".md5"],a.externalLink[href$=".sha1"]{background:url('../im
a.externalLink[href^=https]{background:inherit;padding-right:inherit}
a.externalLink[href^=file]{background:url('../images/drive-harddisk.png') right center no-repeat;padding-right:18px}
a.externalLink[href^=ftp]{background:url('../images/network-server.png') right center no-repeat;padding-right:18px}
-a.externalLink[href^=mailto]{background:url('../images/contact-new.png') right center no-repeat;padding-right:18px}
\ No newline at end of file
+a.externalLink[href^=mailto]{background:url('../images/contact-new.png') right center no-repeat;padding-right:18px}
+#publishDate,#projectVersion{display:none}
diff --git a/src/site/site.xml b/src/site/site.xml
index 451081fc409..f1b07b06c71 100644
--- a/src/site/site.xml
+++ b/src/site/site.xml
@@ -1,7 +1,8 @@
-
-
-
+
+
org.apache.maven.skins
@@ -19,10 +20,8 @@
-
- HtmlUnit
- /images/htmlunit.png
- https://www.htmlunit.org
+
+
@@ -73,5 +72,4 @@
-
-
+