diff --git a/maven-core/src/main/java/org/apache/maven/execution/DefaultMavenExecutionRequest.java b/maven-core/src/main/java/org/apache/maven/execution/DefaultMavenExecutionRequest.java
index 0974f27641..2e411f4d14 100644
--- a/maven-core/src/main/java/org/apache/maven/execution/DefaultMavenExecutionRequest.java
+++ b/maven-core/src/main/java/org/apache/maven/execution/DefaultMavenExecutionRequest.java
@@ -105,6 +105,8 @@ public class DefaultMavenExecutionRequest
 
     private List<ArtifactRepository> remoteRepositories;
 
+    private List<ArtifactRepository> pluginArtifactRepositories;
+
     /**
      * Suppress SNAPSHOT updates.
      * 
@@ -144,6 +146,7 @@ public class DefaultMavenExecutionRequest
         copy.setGlobalChecksumPolicy( original.getGlobalChecksumPolicy() );
         copy.setUpdateSnapshots( original.isUpdateSnapshots() );
         copy.setRemoteRepositories( original.getRemoteRepositories() );
+        copy.setPluginArtifactRepositories( original.getPluginArtifactRepositories() );
         copy.setNoSnapshotUpdates( original.isNoSnapshotUpdates() );
         return original;        
     }
@@ -232,6 +235,14 @@ public class DefaultMavenExecutionRequest
         return this;
     }
 
+    public MavenExecutionRequest setPluginArtifactRepositories( List<ArtifactRepository> pluginArtifactRepositories )
+    {
+        getPluginArtifactRepositories().clear();
+        getPluginArtifactRepositories().addAll( pluginArtifactRepositories );
+        
+        return this;
+    }
+
     public void setProjectBuildingConfiguration( ProjectBuildingRequest projectBuildingConfiguration )
     {
         this.projectBuildingRequest = projectBuildingConfiguration;
@@ -705,6 +716,15 @@ public class DefaultMavenExecutionRequest
         return remoteRepositories;
     }
 
+    public List<ArtifactRepository> getPluginArtifactRepositories()
+    {
+        if ( pluginArtifactRepositories == null )
+        {
+            pluginArtifactRepositories = new ArrayList<ArtifactRepository>();
+        }
+        return pluginArtifactRepositories;
+    }
+
     //TODO: this does not belong here.
     public ProjectBuildingRequest getProjectBuildingRequest()
     {
@@ -714,6 +734,7 @@ public class DefaultMavenExecutionRequest
             projectBuildingRequest.setLocalRepository( getLocalRepository() );
             projectBuildingRequest.setExecutionProperties( getProperties() );
             projectBuildingRequest.setRemoteRepositories( getRemoteRepositories() );
+            projectBuildingRequest.setPluginArtifactRepositories( getPluginArtifactRepositories() );
             projectBuildingRequest.setActiveProfileIds( getActiveProfiles() );
             projectBuildingRequest.setInactiveProfileIds( getInactiveProfiles() );
             projectBuildingRequest.setProfiles( getProfiles() );
diff --git a/maven-core/src/main/java/org/apache/maven/execution/MavenExecutionRequest.java b/maven-core/src/main/java/org/apache/maven/execution/MavenExecutionRequest.java
index 5a37e73944..d782f31479 100644
--- a/maven-core/src/main/java/org/apache/maven/execution/MavenExecutionRequest.java
+++ b/maven-core/src/main/java/org/apache/maven/execution/MavenExecutionRequest.java
@@ -199,6 +199,9 @@ public interface MavenExecutionRequest
     MavenExecutionRequest setRemoteRepositories( List<ArtifactRepository> repositories );
     List<ArtifactRepository> getRemoteRepositories();
 
+    MavenExecutionRequest setPluginArtifactRepositories( List<ArtifactRepository> repositories );
+    List<ArtifactRepository> getPluginArtifactRepositories();
+
     File getUserToolchainsFile();
     MavenExecutionRequest setUserToolchainsFile( File userToolchainsFile );
 
diff --git a/maven-core/src/main/java/org/apache/maven/project/DefaultProjectBuildingRequest.java b/maven-core/src/main/java/org/apache/maven/project/DefaultProjectBuildingRequest.java
index aec18c9657..bc78c9c7fb 100644
--- a/maven-core/src/main/java/org/apache/maven/project/DefaultProjectBuildingRequest.java
+++ b/maven-core/src/main/java/org/apache/maven/project/DefaultProjectBuildingRequest.java
@@ -35,6 +35,8 @@ public class DefaultProjectBuildingRequest
 
     private List<ArtifactRepository> remoteRepositories;
 
+    private List<ArtifactRepository> pluginArtifactRepositories;
+
     private List<ModelEventListener> listeners;
     
     private MavenProject topProject;
@@ -60,6 +62,8 @@ public class DefaultProjectBuildingRequest
         activeProfileIds = new ArrayList<String>();
         inactiveProfileIds = new ArrayList<String>();
         executionProperties = new Properties();
+        remoteRepositories = new ArrayList<ArtifactRepository>();
+        pluginArtifactRepositories = new ArrayList<ArtifactRepository>();
     }
 
     public MavenProject getTopLevelProjectFromReactor()
@@ -85,16 +89,35 @@ public class DefaultProjectBuildingRequest
         
     public List<ArtifactRepository> getRemoteRepositories()
     {
-        if ( remoteRepositories == null )
-        {
-            remoteRepositories = new ArrayList<ArtifactRepository>();
-        }
         return remoteRepositories;
     }
 
     public ProjectBuildingRequest setRemoteRepositories( List<ArtifactRepository> remoteRepositories )
     {
-        this.remoteRepositories = remoteRepositories;
+        this.remoteRepositories.clear();
+
+        if ( remoteRepositories != null )
+        {
+            this.remoteRepositories.addAll( remoteRepositories );
+        }
+
+        return this;
+    }
+
+    public List<ArtifactRepository> getPluginArtifactRepositories()
+    {
+        return pluginArtifactRepositories;
+    }
+
+    public ProjectBuildingRequest setPluginArtifactRepositories( List<ArtifactRepository> pluginArtifactRepositories )
+    {
+        this.pluginArtifactRepositories.clear();
+
+        if ( pluginArtifactRepositories != null )
+        {
+            this.pluginArtifactRepositories.addAll( pluginArtifactRepositories );
+        }
+
         return this;
     }
     
@@ -106,6 +129,7 @@ public class DefaultProjectBuildingRequest
     public ProjectBuildingRequest setExecutionProperties( Properties executionProperties )
     {
         this.executionProperties.clear();
+
         if ( executionProperties != null )
         {
             this.executionProperties.putAll( executionProperties );
@@ -155,6 +179,7 @@ public class DefaultProjectBuildingRequest
     public void setActiveProfileIds( List<String> activeProfileIds )
     {
         this.activeProfileIds.clear();
+
         if ( activeProfileIds != null )
         {
             this.activeProfileIds.addAll( activeProfileIds );
@@ -169,6 +194,7 @@ public class DefaultProjectBuildingRequest
     public void setInactiveProfileIds( List<String> inactiveProfileIds )
     {
         this.inactiveProfileIds.clear();
+
         if ( inactiveProfileIds != null )
         {
             this.inactiveProfileIds.addAll( inactiveProfileIds );
@@ -178,6 +204,7 @@ public class DefaultProjectBuildingRequest
     public void setProfiles( List<Profile> profiles )
     {
         this.profiles.clear();
+
         if ( profiles != null )
         {
             this.profiles.addAll( profiles );
diff --git a/maven-core/src/main/java/org/apache/maven/project/MavenProject.java b/maven-core/src/main/java/org/apache/maven/project/MavenProject.java
index da1abda1f7..a3bf70273f 100644
--- a/maven-core/src/main/java/org/apache/maven/project/MavenProject.java
+++ b/maven-core/src/main/java/org/apache/maven/project/MavenProject.java
@@ -235,10 +235,12 @@ public class MavenProject
         this.repositorySystem = repositorySystem;
         originalModel = model;
         
-        remoteArtifactRepositories =
-            createArtifactRepositories( model.getRepositories(), projectBuilderConfiguration.getRemoteRepositories() );
+        remoteArtifactRepositories = projectBuilderConfiguration.getRemoteRepositories();
+        remoteArtifactRepositories = createArtifactRepositories( model.getRepositories(), remoteArtifactRepositories );
 
-        pluginArtifactRepositories = createArtifactRepositories( model.getPluginRepositories(), null );
+        pluginArtifactRepositories = projectBuilderConfiguration.getPluginArtifactRepositories();
+        pluginArtifactRepositories =
+            createArtifactRepositories( model.getPluginRepositories(), pluginArtifactRepositories );
     }
 
     //TODO: need to integrate the effective scope and refactor it out of the MMS
diff --git a/maven-core/src/main/java/org/apache/maven/project/ProjectBuildingRequest.java b/maven-core/src/main/java/org/apache/maven/project/ProjectBuildingRequest.java
index a1bc1a3bef..d2ad419902 100644
--- a/maven-core/src/main/java/org/apache/maven/project/ProjectBuildingRequest.java
+++ b/maven-core/src/main/java/org/apache/maven/project/ProjectBuildingRequest.java
@@ -17,6 +17,10 @@ public interface ProjectBuildingRequest
 
     List<ArtifactRepository> getRemoteRepositories();
 
+    ProjectBuildingRequest setPluginArtifactRepositories( List<ArtifactRepository> pluginArtifacgRepositories );
+
+    List<ArtifactRepository> getPluginArtifactRepositories();
+
     ProjectBuildingRequest setExecutionProperties( Properties executionProperties );
 
     Properties getExecutionProperties();
diff --git a/maven-embedder/src/main/java/org/apache/maven/embedder/execution/DefaultMavenExecutionRequestPopulator.java b/maven-embedder/src/main/java/org/apache/maven/embedder/execution/DefaultMavenExecutionRequestPopulator.java
index 348d8431ad..824403a317 100644
--- a/maven-embedder/src/main/java/org/apache/maven/embedder/execution/DefaultMavenExecutionRequestPopulator.java
+++ b/maven-embedder/src/main/java/org/apache/maven/embedder/execution/DefaultMavenExecutionRequestPopulator.java
@@ -235,6 +235,8 @@ public class DefaultMavenExecutionRequestPopulator
         // </mirrors>        
 
         request.setRemoteRepositories( repositorySystem.getMirrors( request.getRemoteRepositories() ) );
+
+        request.setPluginArtifactRepositories( repositorySystem.getMirrors( request.getPluginArtifactRepositories() ) );
     }
 
     // ------------------------------------------------------------------------