diff --git a/maven-plugin-plugin/src/it/ant-basic/pom.xml b/maven-plugin-plugin/src/it/ant-basic/pom.xml
index 8ca0e9f..1e67634 100644
--- a/maven-plugin-plugin/src/it/ant-basic/pom.xml
+++ b/maven-plugin-plugin/src/it/ant-basic/pom.xml
@@ -19,7 +19,7 @@
   ~ under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 ../../../../maven-site/target/site/maven-v4_0_0.xsd ">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.apache.maven.ant.it</groupId>
diff --git a/maven-plugin-plugin/src/it/ant-reference-parameter/pom.xml b/maven-plugin-plugin/src/it/ant-reference-parameter/pom.xml
index e0daac2..0de107d 100644
--- a/maven-plugin-plugin/src/it/ant-reference-parameter/pom.xml
+++ b/maven-plugin-plugin/src/it/ant-reference-parameter/pom.xml
@@ -19,7 +19,7 @@
   ~ under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 ../../../../maven-site/target/site/maven-v4_0_0.xsd ">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.apache.maven.ant.it</groupId>
diff --git a/maven-plugin-plugin/src/it/ant-simple-usage/pom.xml b/maven-plugin-plugin/src/it/ant-simple-usage/pom.xml
index f40fd0b..46eb673 100644
--- a/maven-plugin-plugin/src/it/ant-simple-usage/pom.xml
+++ b/maven-plugin-plugin/src/it/ant-simple-usage/pom.xml
@@ -19,7 +19,7 @@
   ~ under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 ../../../../maven-site/target/site/maven-v4_0_0.xsd ">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.apache.maven.ant.it</groupId>
diff --git a/maven-plugin-plugin/src/it/beanshell-simple/pom.xml b/maven-plugin-plugin/src/it/beanshell-simple/pom.xml
index 62c344c..57e8c6f 100644
--- a/maven-plugin-plugin/src/it/beanshell-simple/pom.xml
+++ b/maven-plugin-plugin/src/it/beanshell-simple/pom.xml
@@ -19,7 +19,7 @@
   ~ under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 ../../../../maven-site/target/site/maven-v4_0_0.xsd ">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.apache.maven.beanshell.it</groupId>
diff --git a/maven-plugin-plugin/src/it/help-basic/pom.xml b/maven-plugin-plugin/src/it/help-basic/pom.xml
index a1528ab..320219f 100644
--- a/maven-plugin-plugin/src/it/help-basic/pom.xml
+++ b/maven-plugin-plugin/src/it/help-basic/pom.xml
@@ -19,7 +19,7 @@ specific language governing permissions and limitations
 under the License.
 -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 ../../../../maven-site/target/site/maven-v4_0_0.xsd ">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.apache.maven.its.plugin</groupId>
diff --git a/maven-plugin-plugin/src/it/help-package/pom.xml b/maven-plugin-plugin/src/it/help-package/pom.xml
index 42949e8..7735aee 100644
--- a/maven-plugin-plugin/src/it/help-package/pom.xml
+++ b/maven-plugin-plugin/src/it/help-package/pom.xml
@@ -19,7 +19,7 @@ specific language governing permissions and limitations
 under the License.
 -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 ../../../../maven-site/target/site/maven-v4_0_0.xsd ">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.apache.maven.its.plugin</groupId>
diff --git a/maven-plugin-plugin/src/it/java-basic-annotations/pom.xml b/maven-plugin-plugin/src/it/java-basic-annotations/pom.xml
index cabbe62..097785d 100644
--- a/maven-plugin-plugin/src/it/java-basic-annotations/pom.xml
+++ b/maven-plugin-plugin/src/it/java-basic-annotations/pom.xml
@@ -19,7 +19,7 @@ specific language governing permissions and limitations
 under the License.
 -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 ../../../../maven-site/target/site/maven-v4_0_0.xsd ">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.apache.maven.its.basic-java-annotations</groupId>
diff --git a/maven-plugin-plugin/src/it/java-basic/pom.xml b/maven-plugin-plugin/src/it/java-basic/pom.xml
index 8b3154a..37a44a1 100644
--- a/maven-plugin-plugin/src/it/java-basic/pom.xml
+++ b/maven-plugin-plugin/src/it/java-basic/pom.xml
@@ -19,7 +19,7 @@ specific language governing permissions and limitations
 under the License.
 -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 ../../../../maven-site/target/site/maven-v4_0_0.xsd ">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.apache.maven.its.it0013</groupId>
diff --git a/maven-plugin-plugin/src/it/mplugin-187/pom.xml b/maven-plugin-plugin/src/it/mplugin-187/pom.xml
index 6c92bb4..52ec7f5 100644
--- a/maven-plugin-plugin/src/it/mplugin-187/pom.xml
+++ b/maven-plugin-plugin/src/it/mplugin-187/pom.xml
@@ -19,7 +19,7 @@ specific language governing permissions and limitations
 under the License.
 -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 ../../../../maven-site/target/site/maven-v4_0_0.xsd ">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.apache.maven.plugins.plugin.its</groupId>
diff --git a/maven-plugin-plugin/src/it/skip/pom.xml b/maven-plugin-plugin/src/it/skip/pom.xml
index cce80d6..c9aa737 100644
--- a/maven-plugin-plugin/src/it/skip/pom.xml
+++ b/maven-plugin-plugin/src/it/skip/pom.xml
@@ -19,7 +19,7 @@ specific language governing permissions and limitations
 under the License.
 -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 ../../../../maven-site/target/site/maven-v4_0_0.xsd ">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
   <groupId>org.apache.maven.its.it0013</groupId>