diff --git a/pom.xml b/pom.xml
index 74f062ca..e5c5d383 100644
--- a/pom.xml
+++ b/pom.xml
@@ -127,7 +127,7 @@
   </scm>
 
   <properties>
-    <mavenVersion>3.5.4</mavenVersion>
+    <mavenVersion>3.6.3</mavenVersion>
     <recommendedJavaBuildVersion>11</recommendedJavaBuildVersion>
     <project.build.outputTimestamp>2023-05-09T19:54:26Z</project.build.outputTimestamp>
   </properties>
@@ -227,6 +227,29 @@
   </dependencies>
 
   <build>
+    <pluginManagement>
+      <plugins>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-plugin-report-plugin</artifactId>
+          <configuration>
+            <requirementsHistories>
+              <requirementsHistory>
+                <version>1.5.0</version>
+                <maven>3.5.4</maven>
+                <jdk>1.8</jdk>
+              </requirementsHistory>
+              <requirementsHistory>
+                <version>1.4.0</version>
+                <maven>3.2.5</maven>
+                <jdk>1.8</jdk>
+              </requirementsHistory>
+            </requirementsHistories>
+          </configuration>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+
     <plugins>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
diff --git a/src/test/resources/keep-comments-in-pom/expected-flattened-pom-jdk11.xml b/src/test/resources/keep-comments-in-pom/expected-flattened-pom-jdk11.xml
index b8c740d6..724e3381 100644
--- a/src/test/resources/keep-comments-in-pom/expected-flattened-pom-jdk11.xml
+++ b/src/test/resources/keep-comments-in-pom/expected-flattened-pom-jdk11.xml
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8"?><project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<?xml version="1.0" encoding="UTF-8"?><project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.codehaus.mojo.flatten.its</groupId>
   <artifactId>resolve-properties-ci-do-not-interpolate-profile-activation-file</artifactId>
diff --git a/src/test/resources/keep-comments-in-pom/expected-flattened-pom.xml b/src/test/resources/keep-comments-in-pom/expected-flattened-pom.xml
index 6c5543bd..d189d06a 100644
--- a/src/test/resources/keep-comments-in-pom/expected-flattened-pom.xml
+++ b/src/test/resources/keep-comments-in-pom/expected-flattened-pom.xml
@@ -1,5 +1,5 @@
 <?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/xsd/maven-4.0.0.xsd">
+<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.codehaus.mojo.flatten.its</groupId>
   <artifactId>resolve-properties-ci-do-not-interpolate-profile-activation-file</artifactId>
diff --git a/src/test/resources/keep-comments-in-pom/pom.xml b/src/test/resources/keep-comments-in-pom/pom.xml
index 72a37723..9cc9e95f 100644
--- a/src/test/resources/keep-comments-in-pom/pom.xml
+++ b/src/test/resources/keep-comments-in-pom/pom.xml
@@ -1,5 +1,5 @@
 <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/xsd/maven-4.0.0.xsd">
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.codehaus.mojo.flatten.its</groupId>
 	<artifactId>resolve-properties-ci-do-not-interpolate-profile-activation-file</artifactId>