diff --git a/impl/maven-core/src/main/java/org/apache/maven/internal/transformation/impl/DefaultConsumerPomBuilder.java b/impl/maven-core/src/main/java/org/apache/maven/internal/transformation/impl/DefaultConsumerPomBuilder.java
index e3164beba450..9d74419c989e 100644
--- a/impl/maven-core/src/main/java/org/apache/maven/internal/transformation/impl/DefaultConsumerPomBuilder.java
+++ b/impl/maven-core/src/main/java/org/apache/maven/internal/transformation/impl/DefaultConsumerPomBuilder.java
@@ -176,8 +176,8 @@ private Dependency merge(Dependency dep1, Dependency dep2) {
     }
 
     private static String getDependencyKey(org.apache.maven.api.Dependency dependency) {
-        return dependency.getGroupId() + ":" + dependency.getArtifactId() + ":" + dependency.getType() + ":"
-                + dependency.getClassifier();
+        return dependency.getGroupId() + ":" + dependency.getArtifactId() + ":"
+                + dependency.getType().id() + ":" + dependency.getClassifier();
     }
 
     private static String getDependencyKey(Dependency dependency) {
diff --git a/impl/maven-impl/src/main/java/org/apache/maven/impl/resolver/type/DefaultType.java b/impl/maven-impl/src/main/java/org/apache/maven/impl/resolver/type/DefaultType.java
index 5922fea2257e..86607b7703da 100644
--- a/impl/maven-impl/src/main/java/org/apache/maven/impl/resolver/type/DefaultType.java
+++ b/impl/maven-impl/src/main/java/org/apache/maven/impl/resolver/type/DefaultType.java
@@ -111,4 +111,16 @@ public Set<PathType> getPathTypes() {
     public Map<String, String> getProperties() {
         return properties;
     }
+
+    @Override
+    public String toString() {
+        return "DefaultType[" + "id='"
+                + id + '\'' + ", language="
+                + language + ", extension='"
+                + extension + '\'' + ", classifier='"
+                + classifier + '\'' + ", includesDependencies="
+                + includesDependencies + ", pathTypes="
+                + pathTypes + ", properties="
+                + properties + ']';
+    }
 }
diff --git a/its/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng8645ConsumerPomDependencyManagementTest.java b/its/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng8645ConsumerPomDependencyManagementTest.java
new file mode 100644
index 000000000000..a6e32c0d152a
--- /dev/null
+++ b/its/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng8645ConsumerPomDependencyManagementTest.java
@@ -0,0 +1,74 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.maven.it;
+
+import java.io.Reader;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import org.apache.maven.api.model.Model;
+import org.apache.maven.model.v4.MavenStaxReader;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/**
+ * This is a test set for <a href="https://issues.apache.org/jira/browse/MNG-8645">MNG-8645</a>.
+ */
+class MavenITmng8645ConsumerPomDependencyManagementTest extends AbstractMavenIntegrationTestCase {
+
+    MavenITmng8645ConsumerPomDependencyManagementTest() {
+        super("(4.0.0-rc-3,)");
+    }
+
+    /**
+     *  Verify the dependency management of the consumer POM is computed correctly
+     */
+    @Test
+    void testIt() throws Exception {
+        Path basedir = extractResources("/mng-8645-consumer-pom-dep-mgmt")
+                .getAbsoluteFile()
+                .toPath();
+
+        Verifier verifier = newVerifier(basedir.toString());
+        verifier.addCliArgument("install");
+        verifier.execute();
+        verifier.verifyErrorFreeLog();
+
+        // validate consumer pom
+        Path consumerPom = basedir.resolve(Paths.get(
+                "target",
+                "project-local-repo",
+                "org.apache.maven.its.mng8645",
+                "test",
+                "1.0",
+                "test-1.0-consumer.pom"));
+        assertTrue(Files.exists(consumerPom));
+        Model consumerPomModel;
+        try (Reader r = Files.newBufferedReader(consumerPom)) {
+            consumerPomModel = new MavenStaxReader().read(r);
+        }
+        assertNotNull(consumerPomModel.getDependencyManagement());
+        assertEquals(
+                1, consumerPomModel.getDependencyManagement().getDependencies().size());
+    }
+}
diff --git a/its/core-it-suite/src/test/resources/mng-8645-consumer-pom-dep-mgmt/pom.xml b/its/core-it-suite/src/test/resources/mng-8645-consumer-pom-dep-mgmt/pom.xml
new file mode 100644
index 000000000000..6665c0f71227
--- /dev/null
+++ b/its/core-it-suite/src/test/resources/mng-8645-consumer-pom-dep-mgmt/pom.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" root="true" xsi:schemaLocation="http://maven.apache.org/POM/4.1.0 https://maven.apache.org/xsd/maven-4.1.0.xsd">
+  <groupId>org.apache.maven.its.mng8645</groupId>
+  <artifactId>test</artifactId>
+  <version>1.0</version>
+  <packaging>jar</packaging>
+
+  <dependencyManagement>
+    <dependencies>
+      <dependency>
+        <groupId>commons-io</groupId>
+        <artifactId>commons-io</artifactId>
+        <version>2.16.1</version>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.apache.maven.shared</groupId>
+      <artifactId>file-management</artifactId>
+      <version>3.1.0</version>
+    </dependency>
+  </dependencies>
+</project>