diff --git a/examples/math_70/pom.xml b/examples/math_70/pom.xml
index f21de7f59..5c5bd58c5 100644
--- a/examples/math_70/pom.xml
+++ b/examples/math_70/pom.xml
@@ -16,11 +16,6 @@
    limitations under the License.
 -->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
-  <parent>
-    <groupId>org.apache.commons</groupId>
-    <artifactId>commons-parent</artifactId>
-    <version>15</version>
-  </parent>
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.apache.commons</groupId>
   <artifactId>commons-math</artifactId>
@@ -280,6 +275,15 @@
             </execution>
           </executions>
         </plugin>
+        <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-compiler-plugin</artifactId>
+            <version>3.8.1</version>
+            <configuration>
+                <source>1.8</source>
+                <target>1.8</target>
+            </configuration>
+        </plugin>
       </plugins>
   </build>
   <reporting>