diff --git a/maven-core/src/main/java/org/apache/maven/DefaultMaven.java b/maven-core/src/main/java/org/apache/maven/DefaultMaven.java
index 0fc818e7489b..062708706ed4 100644
--- a/maven-core/src/main/java/org/apache/maven/DefaultMaven.java
+++ b/maven-core/src/main/java/org/apache/maven/DefaultMaven.java
@@ -182,14 +182,21 @@ private MavenExecutionResult doExecute( MavenExecutionRequest request )
         try
         {
             DefaultRepositorySystemSession repoSession =
-                (DefaultRepositorySystemSession) newRepositorySession( request );
-            MavenSession session = new MavenSession( container, repoSession, request, result );
+                    (DefaultRepositorySystemSession) newRepositorySession( request );
+            try
+            {
+                MavenSession session = new MavenSession( container, repoSession, request, result );
 
-            sessionScope.seed( MavenSession.class, session );
+                sessionScope.seed( MavenSession.class, session );
 
-            legacySupport.setSession( session );
+                legacySupport.setSession( session );
 
-            return doExecute( request, session, result, repoSession );
+                return doExecute( request, session, result, repoSession );
+            }
+            finally
+            {
+                repoSession.close();
+            }
         }
         finally
         {
diff --git a/maven-embedder/src/main/java/org/apache/maven/cli/internal/BootstrapCoreExtensionManager.java b/maven-embedder/src/main/java/org/apache/maven/cli/internal/BootstrapCoreExtensionManager.java
index 89c9bed4db10..1d1e4989c1d2 100644
--- a/maven-embedder/src/main/java/org/apache/maven/cli/internal/BootstrapCoreExtensionManager.java
+++ b/maven-embedder/src/main/java/org/apache/maven/cli/internal/BootstrapCoreExtensionManager.java
@@ -95,10 +95,17 @@ public List<CoreExtensionEntry> loadCoreExtensions( MavenExecutionRequest reques
         throws Exception
     {
         RepositorySystemSession repoSession = repositorySystemSessionFactory.newRepositorySession( request );
-        List<RemoteRepository> repositories = RepositoryUtils.toRepos( request.getPluginArtifactRepositories() );
-        Interpolator interpolator = createInterpolator( request );
+        try
+        {
+            List<RemoteRepository> repositories = RepositoryUtils.toRepos( request.getPluginArtifactRepositories() );
+            Interpolator interpolator = createInterpolator( request );
 
-        return resolveCoreExtensions( repoSession, repositories, providedArtifacts, extensions, interpolator );
+            return resolveCoreExtensions( repoSession, repositories, providedArtifacts, extensions, interpolator );
+        }
+        finally
+        {
+            repoSession.close();
+        }
     }
 
     private List<CoreExtensionEntry> resolveCoreExtensions( RepositorySystemSession repoSession,
diff --git a/pom.xml b/pom.xml
index ad3df8cbf75c..eb5d866ae1f7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -64,7 +64,7 @@ under the License.
     <securityDispatcherVersion>2.0</securityDispatcherVersion>
     <cipherVersion>2.0</cipherVersion>
     <jxpathVersion>1.3</jxpathVersion>
-    <resolverVersion>1.8.2</resolverVersion>
+    <resolverVersion>1.8.3-SNAPSHOT</resolverVersion>
     <slf4jVersion>1.7.36</slf4jVersion>
     <xmlunitVersion>2.2.1</xmlunitVersion>
     <powermockVersion>1.7.4</powermockVersion>