diff --git a/maven-core/src/main/java/org/apache/maven/internal/aether/DefaultRepositorySystemSessionFactory.java b/maven-core/src/main/java/org/apache/maven/internal/aether/DefaultRepositorySystemSessionFactory.java
index 248a3b6dd12..bda467c45e0 100644
--- a/maven-core/src/main/java/org/apache/maven/internal/aether/DefaultRepositorySystemSessionFactory.java
+++ b/maven-core/src/main/java/org/apache/maven/internal/aether/DefaultRepositorySystemSessionFactory.java
@@ -177,8 +177,8 @@ else if ( request.isUpdateSnapshots() )
         DefaultMirrorSelector mirrorSelector = new DefaultMirrorSelector();
         for ( Mirror mirror : request.getMirrors() )
         {
-            mirrorSelector.add( mirror.getId(), mirror.getUrl(), mirror.getLayout(), false, mirror.getMirrorOf(),
-                                mirror.getMirrorOfLayouts() );
+            mirrorSelector.add( mirror.getId(), mirror.getUrl(), mirror.getLayout(), false, mirror.isBlocked(),
+                                mirror.getMirrorOf(), mirror.getMirrorOfLayouts() );
         }
         session.setMirrorSelector( mirrorSelector );
 
diff --git a/maven-settings/pom.xml b/maven-settings/pom.xml
index 3730e6c2bab..70866e54ca7 100644
--- a/maven-settings/pom.xml
+++ b/maven-settings/pom.xml
@@ -46,7 +46,7 @@ under the License.
         <groupId>org.codehaus.modello</groupId>
         <artifactId>modello-maven-plugin</artifactId>
         <configuration>
-          <version>1.1.0</version>
+          <version>1.2.0</version>
           <models>
             <model>src/main/mdo/settings.mdo</model>
           </models>
diff --git a/maven-settings/src/main/mdo/settings.mdo b/maven-settings/src/main/mdo/settings.mdo
index 333d8bd7ac8..b0498df43a4 100644
--- a/maven-settings/src/main/mdo/settings.mdo
+++ b/maven-settings/src/main/mdo/settings.mdo
@@ -633,6 +633,15 @@
             of the mirror to repositories with a matching layout (apart from a matching id). Since Maven 3.
           </description>
         </field>
+        <field>
+          <name>blocked</name>
+          <version>1.2.0+</version>
+          <type>boolean</type>
+          <defaultValue>false</defaultValue>
+          <description>
+            Whether this mirror should be blocked from any download request but fail the download process, explaining why.
+          </description>
+        </field>
       </fields>
       <codeSegments>
         <codeSegment>
@@ -648,6 +657,10 @@
         sb.append( ",mirrorOf=" ).append( mirrorOf );
         sb.append( ",url=" ).append( this.url );
         sb.append( ",name=" ).append( this.name );
+        if ( isBlocked() )
+        {
+            sb.append( ",blocked" );
+        }
         sb.append( "]" );
         return sb.toString();
     }