diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index d2eed416..99fd996f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -26,13 +26,13 @@ Wiki](https://github.com/xmlunit/user-guide/wiki).
 Because XMLUnit is developed for Java and .NET, both Projects shares the same test-resources.
 The test-resources folder is integrated as git submodule.
 This means you need to run 'git submodule update --init' once inside your
-working copies after merging github's master branches of xmlunit or
+working copies after merging github's main branches of xmlunit or
 xmlunit.net.
 
 ### Preparing a Pull Request
 
 + Create a topic branch from where you want to base your work (this is
-  usually the master branch).
+  usually the main branch).
 + Make commits of logical units.
 + Respect the original code style:
   + Only use spaces for indentation.
diff --git a/README.md b/README.md
index bd5df81a..8cae5fe7 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@ XMLUnit for Java 2.x
 
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/org.xmlunit/xmlunit-core/badge.svg)](https://maven-badges.herokuapp.com/maven-central/org.xmlunit/xmlunit-core)
 
-[![Build Status XMLUnit 2.x for Java](https://travis-ci.org/xmlunit/xmlunit.svg?branch=master)](https://travis-ci.org/xmlunit/xmlunit) [![Coverage Status](https://coveralls.io/repos/xmlunit/xmlunit/badge.svg)](https://coveralls.io/r/xmlunit/xmlunit)
+[![Build Status XMLUnit 2.x for Java](https://travis-ci.org/xmlunit/xmlunit.svg?branch=main)](https://travis-ci.org/xmlunit/xmlunit) [![Coverage Status](https://coveralls.io/repos/xmlunit/xmlunit/badge.svg)](https://coveralls.io/r/xmlunit/xmlunit)
 
 XMLUnit is a library that supports testing XML output in several ways.
 
diff --git a/src/main/javadoc/overview.html b/src/main/javadoc/overview.html
index 13be3b38..fede6905 100644
--- a/src/main/javadoc/overview.html
+++ b/src/main/javadoc/overview.html
@@ -62,16 +62,16 @@
     <ul>
       <li><a href="https://www.xmlunit.org/">XMLUnit's home page</a></li>
       <li><a href="https://github.com/xmlunit/xmlunit">Source Code</a></li>
-      <li><a href="https://github.com/xmlunit/xmlunit/blob/master/CONTRIBUTING.md">Contributing Guide</a></li>
+      <li><a href="https://github.com/xmlunit/xmlunit/blob/main/CONTRIBUTING.md">Contributing Guide</a></li>
       <li><a href="https://github.com/xmlunit/xmlunit/issues">Reporting Issues</a></li>
       <li><a href="https://github.com/xmlunit/user-guide/wiki">User Guide</a></li>
       <li><a href="https://github.com/xmlunit/xmlunit/wiki">Developer Wiki</a></li>
     </ul>
 
     <p>XMLUnit for Java is licensed
-      under <a href="https://github.com/xmlunit/xmlunit/blob/master/LICENSE">the
+      under <a href="https://github.com/xmlunit/xmlunit/blob/main/LICENSE">the
       Apache License, Version 2.0</a>.  The legacy jar uses
-      the <a href="https://github.com/xmlunit/xmlunit/blob/master/xmlunit-legacy/LICENSE.txt">three
+      the <a href="https://github.com/xmlunit/xmlunit/blob/main/xmlunit-legacy/LICENSE.txt">three
       clause BSD license</a>, the same license as XMLUnit for Java 1.x
       did.</p>
   </body>
diff --git a/test-resources b/test-resources
index a6ee962d..67a7aa5a 160000
--- a/test-resources
+++ b/test-resources
@@ -1 +1 @@
-Subproject commit a6ee962d8441db799f160e0d43ce96a08f925894
+Subproject commit 67a7aa5ac345fa46bfcb5fc1154ed14807e3f87d
diff --git a/xmlunit-legacy/pom.xml b/xmlunit-legacy/pom.xml
index 80f76608..859b2a04 100644
--- a/xmlunit-legacy/pom.xml
+++ b/xmlunit-legacy/pom.xml
@@ -35,7 +35,7 @@
   <licenses>
     <license>
       <name>The BSD 3-Clause License</name>
-      <url>https://github.com/xmlunit/xmlunit/blob/master/xmlunit-legacy/LICENSE.txt</url>
+      <url>https://github.com/xmlunit/xmlunit/blob/main/xmlunit-legacy/LICENSE.txt</url>
       <distribution>repo</distribution>
     </license>
   </licenses>