diff --git a/README.md b/README.md
index 653e6f206..80a4e23b7 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ If you like/use this project, a Star / Watch / Follow on GitHub is appreciated.
 General usage of External Null Annotations in Eclipse is documented at
 https://help.eclipse.org/latest/index.jsp?topic=/org.eclipse.jdt.doc.user/tasks/task-using_external_null_annotations.htm
 
-[See theses slides here](http://www.slideshare.net/mikervorburger/the-end-of-the-world-as-we-know-it-aka-your-last-nullpointerexception-1b-bugs) from this
+[See theses slides here](https://www.slideshare.net/mikervorburger/the-end-of-the-world-as-we-know-it-aka-your-last-nullpointerexception-1b-bugs) from this
 [EclipseCon Europe 2016 presentation](https://www.eclipsecon.org/europe2016/session/end-world-we-know-it-aka-your-last-nullpointerexception-1b-bugs) for some background about this project.
 
 To automatically Enable Annotation-based Null Analysis in the Eclipse Project Preferences correctly (e.g. when you import the `examples/` here), we highly
@@ -70,7 +70,7 @@ You need to add this repository configuration to your Maven `settings.xml`:
 
 ### <a id="building"></a>Building from Sources
 
-The project also uses the [maven-toolchains-plugin](http://maven.apache.org/plugins/maven-toolchains-plugin/) which decouples the JDK that is
+The project also uses the [maven-toolchains-plugin](https://maven.apache.org/plugins/maven-toolchains-plugin/) which decouples the JDK that is
 used to execute Maven and it's plug-ins from the target JDK that is used for compilation and/or unit testing. This ensures full binary
 compatibility of the compiled artifacts with the runtime library of the required target JDK.
 
diff --git a/eea-all/pom.xml b/eea-all/pom.xml
index 12ae1e522..3135207ea 100644
--- a/eea-all/pom.xml
+++ b/eea-all/pom.xml
@@ -6,7 +6,7 @@ SPDX-License-Identifier: EPL-2.0
 -->
 <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>
 
   <parent>
diff --git a/examples/maven-tycho/pom.xml b/examples/maven-tycho/pom.xml
index b72cf0912..28a12e8ce 100644
--- a/examples/maven-tycho/pom.xml
+++ b/examples/maven-tycho/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>
 
 <!--This file is meant to be an example to use the tycho compiler with external null annotations.
diff --git a/examples/maven/hello/pom.xml b/examples/maven/hello/pom.xml
index 087603d7a..bce63ee2f 100644
--- a/examples/maven/hello/pom.xml
+++ b/examples/maven/hello/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>
 
   <parent>
diff --git a/examples/maven/jdt-ecj-settings/pom.xml b/examples/maven/jdt-ecj-settings/pom.xml
index d7837d8ca..ec307844e 100644
--- a/examples/maven/jdt-ecj-settings/pom.xml
+++ b/examples/maven/jdt-ecj-settings/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.lastnpe.examples</groupId>
diff --git a/examples/maven/lib/pom.xml b/examples/maven/lib/pom.xml
index 552a65ab5..9704056a6 100644
--- a/examples/maven/lib/pom.xml
+++ b/examples/maven/lib/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>
 
   <parent>
diff --git a/examples/maven/pom.xml b/examples/maven/pom.xml
index fc8cf51da..f93e9012f 100644
--- a/examples/maven/pom.xml
+++ b/examples/maven/pom.xml
@@ -1,7 +1,7 @@
 <?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">
+  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>
 
diff --git a/libraries/gson-2/pom.xml b/libraries/gson-2/pom.xml
index 3c410e090..8e4c4be47 100644
--- a/libraries/gson-2/pom.xml
+++ b/libraries/gson-2/pom.xml
@@ -1,7 +1,7 @@
 <?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">
+  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>
 
   <parent>
diff --git a/libraries/guava/pom.xml b/libraries/guava/pom.xml
index 26ec5a3f3..dcb9a83e3 100644
--- a/libraries/guava/pom.xml
+++ b/libraries/guava/pom.xml
@@ -1,7 +1,7 @@
 <?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">
+  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>
 
   <parent>
diff --git a/libraries/jackson-2/pom.xml b/libraries/jackson-2/pom.xml
index f5285f9bb..97009a538 100644
--- a/libraries/jackson-2/pom.xml
+++ b/libraries/jackson-2/pom.xml
@@ -6,7 +6,7 @@ SPDX-License-Identifier: EPL-2.0
 -->
 <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>
 
   <parent>
diff --git a/libraries/jakarta-mail-api-2/pom.xml b/libraries/jakarta-mail-api-2/pom.xml
index b93f6b87b..9175b92c1 100644
--- a/libraries/jakarta-mail-api-2/pom.xml
+++ b/libraries/jakarta-mail-api-2/pom.xml
@@ -1,7 +1,7 @@
 <?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">
+  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>
 
   <parent>
diff --git a/libraries/jakarta-servlet-api-6/pom.xml b/libraries/jakarta-servlet-api-6/pom.xml
index a21b762fd..ac1ffdd3d 100644
--- a/libraries/jakarta-servlet-api-6/pom.xml
+++ b/libraries/jakarta-servlet-api-6/pom.xml
@@ -1,7 +1,7 @@
 <?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">
+  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>
 
   <parent>
diff --git a/libraries/java-17/pom.xml b/libraries/java-17/pom.xml
index c812f6743..6e21b07bd 100644
--- a/libraries/java-17/pom.xml
+++ b/libraries/java-17/pom.xml
@@ -1,7 +1,7 @@
 <?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">
+  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>
 
   <parent>
diff --git a/libraries/javax-mail-api-1/pom.xml b/libraries/javax-mail-api-1/pom.xml
index 1d625ae31..a9ce948de 100644
--- a/libraries/javax-mail-api-1/pom.xml
+++ b/libraries/javax-mail-api-1/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>
 
   <parent>
diff --git a/libraries/javax-servlet-api-4/pom.xml b/libraries/javax-servlet-api-4/pom.xml
index 28e399020..4fe863cb8 100644
--- a/libraries/javax-servlet-api-4/pom.xml
+++ b/libraries/javax-servlet-api-4/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>
 
   <parent>
diff --git a/libraries/jetty-client-12/pom.xml b/libraries/jetty-client-12/pom.xml
index bf988953a..7f030df88 100644
--- a/libraries/jetty-client-12/pom.xml
+++ b/libraries/jetty-client-12/pom.xml
@@ -1,7 +1,7 @@
 <?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">
+  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>
 
   <parent>
diff --git a/libraries/junit-5/pom.xml b/libraries/junit-5/pom.xml
index fb53dac5e..6e8dbad4d 100644
--- a/libraries/junit-5/pom.xml
+++ b/libraries/junit-5/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>
 
   <parent>
diff --git a/libraries/mockito-5/pom.xml b/libraries/mockito-5/pom.xml
index 426ea8890..28b84a248 100644
--- a/libraries/mockito-5/pom.xml
+++ b/libraries/mockito-5/pom.xml
@@ -1,7 +1,7 @@
 <?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">
+  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>
 
   <parent>
diff --git a/libraries/osgi-core-8/pom.xml b/libraries/osgi-core-8/pom.xml
index 24d101084..7ed1d92cb 100644
--- a/libraries/osgi-core-8/pom.xml
+++ b/libraries/osgi-core-8/pom.xml
@@ -1,7 +1,7 @@
 <?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">
+  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>
 
   <parent>
diff --git a/libraries/spring-6/pom.xml b/libraries/spring-6/pom.xml
index b472bcf45..b983a8dc7 100644
--- a/libraries/spring-6/pom.xml
+++ b/libraries/spring-6/pom.xml
@@ -1,7 +1,7 @@
 <?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">
+  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>
 
   <parent>
diff --git a/libraries/xstream-1/pom.xml b/libraries/xstream-1/pom.xml
index 4c476ba50..a755bb542 100644
--- a/libraries/xstream-1/pom.xml
+++ b/libraries/xstream-1/pom.xml
@@ -1,7 +1,7 @@
 <?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">
+  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>
 
   <parent>
diff --git a/pom.xml b/pom.xml
index f6d8b3d60..48d532a99 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,7 +1,7 @@
 <?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">
+  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.lastnpe.eea</groupId>
@@ -16,7 +16,7 @@
   <inceptionYear>2016</inceptionYear>
   <organization>
     <name>LastNPE.org</name>
-    <url>http://www.lastnpe.org</url>
+    <url>https://www.lastnpe.org</url>
   </organization>
 
   <licenses>