updated Modello xsd url
diff --git a/src/main/mdo/remote-resources.mdo b/src/main/mdo/remote-resources.mdo
index da13963..971b8c5 100644
--- a/src/main/mdo/remote-resources.mdo
+++ b/src/main/mdo/remote-resources.mdo
@@ -17,8 +17,8 @@
 under the License.
 -->
 
-<model xmlns="http://modello.codehaus.org/MODELLO/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-       xsi:schemaLocation="http://modello.codehaus.org/MODELLO/1.1.0 http://modello.codehaus.org/xsd/modello-1.1.0.xsd"
+<model xmlns="https://codehaus-plexus.github.io/MODELLO/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:schemaLocation="https://codehaus-plexus.github.io/MODELLO/1.1.0 https://codehaus-plexus.github.io/modello/xsd/modello-1.1.0.xsd"
        xml.namespace="http://maven.apache.org/remote-resources/${version}"
        xml.schemaLocation="http://maven.apache.org/xsd/remote-resources-${version}.xsd">
   <id>remote-resources</id>
diff --git a/src/main/mdo/supplemental-model.mdo b/src/main/mdo/supplemental-model.mdo
index 21bbb42..9d10b97 100644
--- a/src/main/mdo/supplemental-model.mdo
+++ b/src/main/mdo/supplemental-model.mdo
@@ -17,8 +17,8 @@
 under the License.
 -->
 
-<model xmlns="http://modello.codehaus.org/MODELLO/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-       xsi:schemaLocation="http://modello.codehaus.org/MODELLO/1.1.0 http://modello.codehaus.org/xsd/modello-1.1.0.xsd"
+<model xmlns="https://codehaus-plexus.github.io/MODELLO/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:schemaLocation="https://codehaus-plexus.github.io/MODELLO/1.1.0 https://codehaus-plexus.github.io/modello/xsd/modello-1.1.0.xsd"
        xml.namespace="http://maven.apache.org/supplemental-model/${version}"
        xml.schemaLocation="http://maven.apache.org/xsd/supplemental-model-${version}.xsd">
   <id>supplemental-model</id>