diff --git a/examples/mixin-maven-plugin/mixin-example/mixin1/pom.xml b/examples/mixin-maven-plugin/mixin-example/mixin1/pom.xml
index 831ac56..f641662 100755
--- a/examples/mixin-maven-plugin/mixin-example/mixin1/pom.xml
+++ b/examples/mixin-maven-plugin/mixin-example/mixin1/pom.xml
@@ -13,6 +13,15 @@
         <message>HELLO DEFAULT MESSAGE FROM MIXIN</message>
     </properties>
     <build>
+        <extensions>
+            <extension>
+                <groupId>org.apache.maven.extensions</groupId>
+                <artifactId>maven-build-cache-extension</artifactId>
+                <version>1.0.1</version>
+            </extension>
+        </extensions>
+
+
         <pluginManagement>
             <plugins>
                 <!-- This is a simple execution of antrun during initialize phase to echo a message from a property.
diff --git a/examples/mixin-maven-plugin/mixin-example/pom.xml b/examples/mixin-maven-plugin/mixin-example/pom.xml
index 26e0046..59ab088 100755
--- a/examples/mixin-maven-plugin/mixin-example/pom.xml
+++ b/examples/mixin-maven-plugin/mixin-example/pom.xml
@@ -7,7 +7,7 @@
     <name>${project.groupId}:${project.artifactId}</name>
 
     <properties>
-        <version.com.playtika.maven.plugins>1.0.1</version.com.playtika.maven.plugins>
+        <version.com.playtika.maven.plugins>1.0.0-SNAPSHOT</version.com.playtika.maven.plugins>
     </properties>
     <modules>
         <module>mixin1</module>
diff --git a/mixin-maven-plugin/src/main/java/com/playtika/maven/plugins/Mixin.java b/mixin-maven-plugin/src/main/java/com/playtika/maven/plugins/Mixin.java
index 9d61805..6cd36ec 100755
--- a/mixin-maven-plugin/src/main/java/com/playtika/maven/plugins/Mixin.java
+++ b/mixin-maven-plugin/src/main/java/com/playtika/maven/plugins/Mixin.java
@@ -19,6 +19,7 @@ public class Mixin {
     private Boolean mergeScm;
     private Boolean mergeRepositories;
     private Boolean mergePluginRepositories;
+    private Boolean mergeBuildExtensions;
     private Boolean recurse;
     private Boolean activateProfiles;
     private Mixins mixins;
@@ -113,6 +114,10 @@ public boolean isMergePluginRepositories() {
         return mergePluginRepositories != null ? mergePluginRepositories : mixins.isMergePluginRepositories();
     }
 
+    public boolean isMergeBuildExtensions() {
+        return mergeBuildExtensions != null ? mergeBuildExtensions : mixins.isMergeBuildExtensions();
+    }
+
     public void setMergePluginRepositories(Boolean mergePluginRepositories) {
         this.mergePluginRepositories = mergePluginRepositories;
     }
@@ -168,11 +173,13 @@ public void merge(Model mixinModel, MavenProject mavenProject, MavenSession mave
         if (isMergePluginRepositories()) {
             mixinModelMerger.mergePluginRepositories(mavenProject.getModel(), mixinModel);
         }
+        if (isMergeBuildExtensions()) {
+            mixinModelMerger.mergeBuildExtensions(mavenProject.getModel(), mixinModel);
+        }
     }
 
     @Override
     public String toString() {
         return getKey();
     }
-
 }
diff --git a/mixin-maven-plugin/src/main/java/com/playtika/maven/plugins/MixinModelMerger.java b/mixin-maven-plugin/src/main/java/com/playtika/maven/plugins/MixinModelMerger.java
index bc46e1c..0298261 100755
--- a/mixin-maven-plugin/src/main/java/com/playtika/maven/plugins/MixinModelMerger.java
+++ b/mixin-maven-plugin/src/main/java/com/playtika/maven/plugins/MixinModelMerger.java
@@ -1,5 +1,9 @@
 package com.playtika.maven.plugins;
 
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
 import org.apache.maven.model.Build;
 import org.apache.maven.model.DistributionManagement;
 import org.apache.maven.model.Model;
@@ -13,10 +17,6 @@
 import org.apache.maven.model.merge.MavenModelMerger;
 import org.codehaus.plexus.component.annotations.Component;
 
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
 /**
  * MixinModelMerger
  * Enables pluginManagement and properties import from different pom files. Uses protected methods of MavenModelMerger, and therefore inherits from it
@@ -187,4 +187,10 @@ public void mergePluginRepositories(Model targetModel, Model sourceModel) {
         super.mergeModelBase_PluginRepositories(targetModel, sourceModel, false, context);
     }
 
+    public void mergeBuildExtensions(Model targetModel, Model sourceModel) {
+        Map<Object, Object> context = new HashMap<Object, Object>();
+        Build targetBuild = targetModel.getBuild();
+        Build sourceBuild = sourceModel.getBuild();
+        super.mergeBuild_Extensions(targetBuild, sourceBuild, false, context);
+    }
 }
diff --git a/mixin-maven-plugin/src/main/java/com/playtika/maven/plugins/Mixins.java b/mixin-maven-plugin/src/main/java/com/playtika/maven/plugins/Mixins.java
index 8187bcf..793b375 100755
--- a/mixin-maven-plugin/src/main/java/com/playtika/maven/plugins/Mixins.java
+++ b/mixin-maven-plugin/src/main/java/com/playtika/maven/plugins/Mixins.java
@@ -7,6 +7,7 @@ public class Mixins {
     private List<Mixin> mixins = new ArrayList<Mixin>();
     private boolean mergePlugins = true;
     private boolean mergePluginManagement = true;
+    private boolean mergeBuildExtensions = true;
     private boolean mergeProperties = true;
     private boolean mergeReporting = true;
     private boolean mergeDistributionManagement = true;
@@ -111,6 +112,10 @@ public boolean isMergePluginRepositories() {
         return mergePluginRepositories;
     }
 
+    public boolean isMergeBuildExtensions() {
+        return mergeBuildExtensions;
+    }
+
     public void setMergePluginRepositories(boolean mergePluginRepositories) {
         this.mergePluginRepositories = mergePluginRepositories;
     }
diff --git a/mixin-maven-plugin/src/test/java/com/playtika/maven/plugins/MixinModelMergeBuildExtensions.java b/mixin-maven-plugin/src/test/java/com/playtika/maven/plugins/MixinModelMergeBuildExtensions.java
new file mode 100755
index 0000000..db4fa8b
--- /dev/null
+++ b/mixin-maven-plugin/src/test/java/com/playtika/maven/plugins/MixinModelMergeBuildExtensions.java
@@ -0,0 +1,75 @@
+package com.playtika.maven.plugins;
+
+import java.util.List;
+
+import org.apache.maven.model.Build;
+import org.apache.maven.model.Extension;
+import org.apache.maven.model.Model;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+
+public class MixinModelMergeBuildExtensions {
+
+    private MixinModelMerger merger;
+    private Model buildExtensions, emptyBuildExtensions;
+
+    @BeforeEach
+    public void setup() {
+        merger = new MixinModelMerger();
+        buildExtensions = new Model();
+        buildExtensions.setBuild(new Build());
+        Extension extension = new Extension();
+        extension.setGroupId("com.test");
+        extension.setArtifactId("test-magre-extension");
+        extension.setVersion("1.0.0");
+        buildExtensions.getBuild().getExtensions().add(extension);
+
+        emptyBuildExtensions = new Model();
+        emptyBuildExtensions.setBuild(new Build());
+    }
+
+    @Test
+    public void testEmptyTarget() {
+        List<Extension> origExtensions = buildExtensions.getBuild().getExtensions();
+        assertNotNull(origExtensions);
+        assertEquals(origExtensions.size(), 1);
+        merger.mergeBuildExtensions(emptyBuildExtensions, buildExtensions);
+        assertEquals(origExtensions, buildExtensions.getBuild().getExtensions());
+    }
+
+    @Test
+    public void testEmptySrc() {
+        merger.mergeScm(buildExtensions, emptyBuildExtensions);
+        assertNotNull(emptyBuildExtensions.getBuild().getExtensions());
+        assertEquals(emptyBuildExtensions.getBuild().getExtensions().size(), 0);
+
+        assertNotNull(buildExtensions.getBuild().getExtensions());
+        assertEquals(buildExtensions.getBuild().getExtensions().size(), 1);
+    }
+
+    @Test
+    public void testMageFromSrc() {
+        emptyBuildExtensions = new Model();
+        emptyBuildExtensions.setBuild(new Build());
+        Extension extension = new Extension();
+        extension.setGroupId("com.test2");
+        extension.setArtifactId("test-magre-extension-v2");
+        extension.setVersion("2.0.0");
+        emptyBuildExtensions.getBuild().getExtensions().add(extension);
+
+        assertNotNull(buildExtensions.getBuild().getExtensions());
+        assertEquals(1, buildExtensions.getBuild().getExtensions().size());
+
+        assertNotNull(emptyBuildExtensions.getBuild().getExtensions());
+        assertEquals(1, emptyBuildExtensions.getBuild().getExtensions().size());
+
+        merger.mergeBuildExtensions(buildExtensions, emptyBuildExtensions);
+
+        assertNotNull(buildExtensions.getBuild().getExtensions());
+        assertEquals(2, buildExtensions.getBuild().getExtensions().size());
+    }
+}