diff --git a/examples/bookstore-webapp/src/main/webapp/WEB-INF/web.xml b/examples/bookstore-webapp/src/main/webapp/WEB-INF/web.xml
index 1259c8a6ad..7d3e06f811 100644
--- a/examples/bookstore-webapp/src/main/webapp/WEB-INF/web.xml
+++ b/examples/bookstore-webapp/src/main/webapp/WEB-INF/web.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2010, 2020 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2010, 2021 Oracle and/or its affiliates. All rights reserved.
 
     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions are met:
@@ -27,7 +27,7 @@
 
 -->
 
-<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
+<web-app version="5.0" xmlns="https://jakarta.ee/xml/ns/jakartaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd">
 
     <filter>
         <filter-name>org.glassfish.jersey.examples.bookstore.webapp.MyApplication</filter-name>
diff --git a/examples/cdi-webapp/src/main/webapp/WEB-INF/web.xml b/examples/cdi-webapp/src/main/webapp/WEB-INF/web.xml
index 3090928564..95df745607 100644
--- a/examples/cdi-webapp/src/main/webapp/WEB-INF/web.xml
+++ b/examples/cdi-webapp/src/main/webapp/WEB-INF/web.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2010, 2021 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Distribution License v. 1.0, which is available at
@@ -11,10 +11,10 @@
 
 -->
 
-<web-app xmlns="http://java.sun.com/xml/ns/javaee"
+<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-      xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
-      version="3.0">
+      xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd"
+      version="5.0">
     <env-entry>
         <env-entry-name>injectedResource</env-entry-name>
         <env-entry-type>java.lang.Integer</env-entry-type>
diff --git a/examples/freemarker-webapp/src/main/webapp/WEB-INF/web.xml b/examples/freemarker-webapp/src/main/webapp/WEB-INF/web.xml
index 7748cd5523..17eef2b121 100644
--- a/examples/freemarker-webapp/src/main/webapp/WEB-INF/web.xml
+++ b/examples/freemarker-webapp/src/main/webapp/WEB-INF/web.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2013, 2020 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2013, 2021 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Distribution License v. 1.0, which is available at
@@ -11,10 +11,10 @@
 
 -->
 
-<web-app version="2.5"
-        xmlns="http://java.sun.com/xml/ns/javaee"
+<web-app version="5.0"
+        xmlns="https://jakarta.ee/xml/ns/jakartaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
+        xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd">
 
     <servlet>
         <servlet-name>org.glassfish.jersey.examples.freemarker.MyApplication</servlet-name>
diff --git a/examples/helloworld-webapp/src/main/webapp/WEB-INF/web.xml b/examples/helloworld-webapp/src/main/webapp/WEB-INF/web.xml
index 30f8cf6503..9c3211d2bf 100644
--- a/examples/helloworld-webapp/src/main/webapp/WEB-INF/web.xml
+++ b/examples/helloworld-webapp/src/main/webapp/WEB-INF/web.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2010, 2020 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2010, 2021 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Distribution License v. 1.0, which is available at
@@ -11,7 +11,7 @@
 
 -->
 
-<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
+<web-app version="5.0" xmlns="https://jakarta.ee/xml/ns/jakartaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd">
     <servlet>
         <servlet-name>org.glassfish.jersey.examples.helloworld_servlet.MyApplication</servlet-name>
         <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
diff --git a/examples/https-server-glassfish/src/main/webapp/WEB-INF/web.xml b/examples/https-server-glassfish/src/main/webapp/WEB-INF/web.xml
index 9833d0ff44..8dc01bbf1b 100644
--- a/examples/https-server-glassfish/src/main/webapp/WEB-INF/web.xml
+++ b/examples/https-server-glassfish/src/main/webapp/WEB-INF/web.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2010, 2021 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Distribution License v. 1.0, which is available at
@@ -11,8 +11,8 @@
 
 -->
 
-<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
+<web-app version="5.0" xmlns="https://jakarta.ee/xml/ns/jakartaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd">
     <servlet>
         <servlet-name>Jersey Web Application</servlet-name>
         <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
diff --git a/examples/json-processing-webapp/src/main/webapp/WEB-INF/web.xml b/examples/json-processing-webapp/src/main/webapp/WEB-INF/web.xml
index 52f4ddb488..fb2223f1af 100644
--- a/examples/json-processing-webapp/src/main/webapp/WEB-INF/web.xml
+++ b/examples/json-processing-webapp/src/main/webapp/WEB-INF/web.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2013, 2020 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2013, 2021 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Distribution License v. 1.0, which is available at
@@ -11,7 +11,7 @@
 
 -->
 
-<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
+<web-app version="5.0" xmlns="https://jakarta.ee/xml/ns/jakartaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd">
     <servlet>
         <servlet-name>org.glassfish.jersey.examples.jsonp.MyApplication</servlet-name>
         <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
diff --git a/examples/managed-beans-webapp/src/main/webapp/WEB-INF/web.xml b/examples/managed-beans-webapp/src/main/webapp/WEB-INF/web.xml
index 1e3283ba19..c81a73ba3f 100644
--- a/examples/managed-beans-webapp/src/main/webapp/WEB-INF/web.xml
+++ b/examples/managed-beans-webapp/src/main/webapp/WEB-INF/web.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2010, 2021 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Distribution License v. 1.0, which is available at
@@ -11,10 +11,10 @@
 
 -->
 
-<web-app xmlns="http://java.sun.com/xml/ns/javaee"
+<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-      xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
-      version="3.0">
+      xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd"
+      version="5.0">
     <env-entry>
         <env-entry-name>injectedResource</env-entry-name>
         <env-entry-type>java.lang.Integer</env-entry-type>
diff --git a/examples/managed-client-simple-webapp/src/main/webapp/WEB-INF/web.xml b/examples/managed-client-simple-webapp/src/main/webapp/WEB-INF/web.xml
index 7d0f76e269..79945c4ab8 100644
--- a/examples/managed-client-simple-webapp/src/main/webapp/WEB-INF/web.xml
+++ b/examples/managed-client-simple-webapp/src/main/webapp/WEB-INF/web.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2013, 2020 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2013, 2021 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Distribution License v. 1.0, which is available at
@@ -11,8 +11,8 @@
 
 -->
 
-<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
+<web-app version="5.0" xmlns="https://jakarta.ee/xml/ns/jakartaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd">
     <servlet>
         <servlet-name>managedclientsimple.resources.ManagedClientApplication</servlet-name>
         <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
diff --git a/examples/managed-client-webapp/src/main/webapp/WEB-INF/web.xml b/examples/managed-client-webapp/src/main/webapp/WEB-INF/web.xml
index 86fc82a0f6..9e03a923e2 100644
--- a/examples/managed-client-webapp/src/main/webapp/WEB-INF/web.xml
+++ b/examples/managed-client-webapp/src/main/webapp/WEB-INF/web.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2013, 2020 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2013, 2021 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Distribution License v. 1.0, which is available at
@@ -11,7 +11,7 @@
 
 -->
 
-<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
+<web-app version="5.0" xmlns="https://jakarta.ee/xml/ns/jakartaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd">
     <servlet>
         <servlet-name>org.glassfish.jersey.examples.managedclient.MyApplication</servlet-name>
         <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
diff --git a/examples/multipart-webapp/src/main/webapp/WEB-INF/web.xml b/examples/multipart-webapp/src/main/webapp/WEB-INF/web.xml
index c01fef184a..1afeaf51be 100644
--- a/examples/multipart-webapp/src/main/webapp/WEB-INF/web.xml
+++ b/examples/multipart-webapp/src/main/webapp/WEB-INF/web.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2012, 2020 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2012, 2021 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Distribution License v. 1.0, which is available at
@@ -11,10 +11,10 @@
 
 -->
 
-<web-app version="2.5"
-        xmlns="http://java.sun.com/xml/ns/javaee"
+<web-app version="5.0"
+        xmlns="https://jakarta.ee/xml/ns/jakartaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
+        xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd">
 
     <servlet>
         <servlet-name>org.glassfish.jersey.examples.multipart.resources.MyApplication</servlet-name>
diff --git a/examples/server-async-standalone/webapp/src/main/webapp/WEB-INF/web.xml b/examples/server-async-standalone/webapp/src/main/webapp/WEB-INF/web.xml
index c94cdfa65d..e7e9377d46 100644
--- a/examples/server-async-standalone/webapp/src/main/webapp/WEB-INF/web.xml
+++ b/examples/server-async-standalone/webapp/src/main/webapp/WEB-INF/web.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2012, 2020 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2012, 2021 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Distribution License v. 1.0, which is available at
@@ -11,10 +11,10 @@
 
 -->
 
-<web-app xmlns="http://java.sun.com/xml/ns/javaee"
+<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
-         version="3.0">
+         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd"
+         version="5.0">
     <servlet>
         <servlet-name>async-app</servlet-name>
         <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
diff --git a/examples/servlet3-webapp/src/main/webapp/WEB-INF/web.xml b/examples/servlet3-webapp/src/main/webapp/WEB-INF/web.xml
index 91a6614fb5..387ab652fc 100644
--- a/examples/servlet3-webapp/src/main/webapp/WEB-INF/web.xml
+++ b/examples/servlet3-webapp/src/main/webapp/WEB-INF/web.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2013, 2018 Oracle and/or its affiliates. All rights reserved.
+    Copyright (c) 2013, 2021 Oracle and/or its affiliates. All rights reserved.
 
     This program and the accompanying materials are made available under the
     terms of the Eclipse Distribution License v. 1.0, which is available at
@@ -11,8 +11,8 @@
 
 -->
 
-<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
+<web-app version="5.0" xmlns="https://jakarta.ee/xml/ns/jakartaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd">
     <servlet>
         <servlet-name>org.glassfish.jersey.examples.servlet3.webapp.App</servlet-name>
     </servlet>