diff --git a/aggregator.pom b/aggregator.pom
index 407fc7e..589e7ce 100644
--- a/aggregator.pom
+++ b/aggregator.pom
@@ -1,4 +1,6 @@
-<project>
+<?xml version="1.0" encoding="UTF-8"?>
+<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'>
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.fedoraproject.xmvn.junit5</groupId>
   <artifactId>aggregator</artifactId>