diff --git a/pom.xml b/pom.xml
index 596f9f0e..1ec9ddf0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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/spring-cloud-kubernetes-config/pom.xml b/spring-cloud-kubernetes-config/pom.xml
index cae15139..f9a1f45e 100644
--- a/spring-cloud-kubernetes-config/pom.xml
+++ b/spring-cloud-kubernetes-config/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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">
 	<parent>
 		<artifactId>spring-cloud-kubernetes</artifactId>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-kubernetes-core/pom.xml b/spring-cloud-kubernetes-core/pom.xml
index 534ded94..0dafddfc 100644
--- a/spring-cloud-kubernetes-core/pom.xml
+++ b/spring-cloud-kubernetes-core/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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">
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-kubernetes</artifactId>
diff --git a/spring-cloud-kubernetes-dependencies/pom.xml b/spring-cloud-kubernetes-dependencies/pom.xml
index 1188edf1..f0ae7122 100644
--- a/spring-cloud-kubernetes-dependencies/pom.xml
+++ b/spring-cloud-kubernetes-dependencies/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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>
 		<artifactId>spring-cloud-dependencies-parent</artifactId>
diff --git a/spring-cloud-kubernetes-discovery/pom.xml b/spring-cloud-kubernetes-discovery/pom.xml
index af9ed8a3..06b4ec3d 100644
--- a/spring-cloud-kubernetes-discovery/pom.xml
+++ b/spring-cloud-kubernetes-discovery/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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">
 	<parent>
 		<groupId>org.springframework.cloud</groupId>
 		<artifactId>spring-cloud-kubernetes</artifactId>
diff --git a/spring-cloud-kubernetes-examples/kubernetes-circuitbreaker-ribbon-example/greeting-service/pom.xml b/spring-cloud-kubernetes-examples/kubernetes-circuitbreaker-ribbon-example/greeting-service/pom.xml
index f6314bba..2d694de5 100644
--- a/spring-cloud-kubernetes-examples/kubernetes-circuitbreaker-ribbon-example/greeting-service/pom.xml
+++ b/spring-cloud-kubernetes-examples/kubernetes-circuitbreaker-ribbon-example/greeting-service/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-kubernetes-examples/kubernetes-circuitbreaker-ribbon-example/name-service/pom.xml b/spring-cloud-kubernetes-examples/kubernetes-circuitbreaker-ribbon-example/name-service/pom.xml
index 894d23f7..a00c4453 100644
--- a/spring-cloud-kubernetes-examples/kubernetes-circuitbreaker-ribbon-example/name-service/pom.xml
+++ b/spring-cloud-kubernetes-examples/kubernetes-circuitbreaker-ribbon-example/name-service/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-kubernetes-examples/kubernetes-circuitbreaker-ribbon-example/pom.xml b/spring-cloud-kubernetes-examples/kubernetes-circuitbreaker-ribbon-example/pom.xml
index 95a169f4..ff60c99c 100644
--- a/spring-cloud-kubernetes-examples/kubernetes-circuitbreaker-ribbon-example/pom.xml
+++ b/spring-cloud-kubernetes-examples/kubernetes-circuitbreaker-ribbon-example/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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>
 		<artifactId>spring-cloud-kubernetes-examples</artifactId>
diff --git a/spring-cloud-kubernetes-examples/kubernetes-hello-world-example/pom.xml b/spring-cloud-kubernetes-examples/kubernetes-hello-world-example/pom.xml
index d7a1263f..22dc4a6d 100644
--- a/spring-cloud-kubernetes-examples/kubernetes-hello-world-example/pom.xml
+++ b/spring-cloud-kubernetes-examples/kubernetes-hello-world-example/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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">
 	<parent>
 		<artifactId>spring-cloud-kubernetes-examples</artifactId>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-kubernetes-examples/kubernetes-leader-election-example/pom.xml b/spring-cloud-kubernetes-examples/kubernetes-leader-election-example/pom.xml
index 0fd5fb55..16fe2f3a 100644
--- a/spring-cloud-kubernetes-examples/kubernetes-leader-election-example/pom.xml
+++ b/spring-cloud-kubernetes-examples/kubernetes-leader-election-example/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-kubernetes-examples/kubernetes-reload-example/pom.xml b/spring-cloud-kubernetes-examples/kubernetes-reload-example/pom.xml
index d3fddc13..86a89e0e 100644
--- a/spring-cloud-kubernetes-examples/kubernetes-reload-example/pom.xml
+++ b/spring-cloud-kubernetes-examples/kubernetes-reload-example/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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">
 	<parent>
 		<artifactId>spring-cloud-kubernetes-examples</artifactId>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-kubernetes-examples/kubernetes-zipkin-example/pom.xml b/spring-cloud-kubernetes-examples/kubernetes-zipkin-example/pom.xml
index 1148a0a2..662014f9 100644
--- a/spring-cloud-kubernetes-examples/kubernetes-zipkin-example/pom.xml
+++ b/spring-cloud-kubernetes-examples/kubernetes-zipkin-example/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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">
 	<parent>
 		<artifactId>spring-cloud-kubernetes-examples</artifactId>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-kubernetes-examples/pom.xml b/spring-cloud-kubernetes-examples/pom.xml
index a0cbe3a7..500e5541 100644
--- a/spring-cloud-kubernetes-examples/pom.xml
+++ b/spring-cloud-kubernetes-examples/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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>
 		<artifactId>spring-cloud-kubernetes</artifactId>
diff --git a/spring-cloud-kubernetes-integration-tests/discovery/discovery-client/pom.xml b/spring-cloud-kubernetes-integration-tests/discovery/discovery-client/pom.xml
index 031087e6..91c44dd4 100644
--- a/spring-cloud-kubernetes-integration-tests/discovery/discovery-client/pom.xml
+++ b/spring-cloud-kubernetes-integration-tests/discovery/discovery-client/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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/spring-cloud-kubernetes-integration-tests/discovery/discovery-service-a/pom.xml b/spring-cloud-kubernetes-integration-tests/discovery/discovery-service-a/pom.xml
index 87d8cf7f..112d83ad 100644
--- a/spring-cloud-kubernetes-integration-tests/discovery/discovery-service-a/pom.xml
+++ b/spring-cloud-kubernetes-integration-tests/discovery/discovery-service-a/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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/spring-cloud-kubernetes-integration-tests/discovery/discovery-service-b/pom.xml b/spring-cloud-kubernetes-integration-tests/discovery/discovery-service-b/pom.xml
index 2e7d9c0e..69e6244a 100644
--- a/spring-cloud-kubernetes-integration-tests/discovery/discovery-service-b/pom.xml
+++ b/spring-cloud-kubernetes-integration-tests/discovery/discovery-service-b/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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/spring-cloud-kubernetes-integration-tests/discovery/pom.xml b/spring-cloud-kubernetes-integration-tests/discovery/pom.xml
index f660f8f6..7f488d06 100644
--- a/spring-cloud-kubernetes-integration-tests/discovery/pom.xml
+++ b/spring-cloud-kubernetes-integration-tests/discovery/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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/spring-cloud-kubernetes-integration-tests/discovery/tests/pom.xml b/spring-cloud-kubernetes-integration-tests/discovery/tests/pom.xml
index f1dd86d3..0e641941 100644
--- a/spring-cloud-kubernetes-integration-tests/discovery/tests/pom.xml
+++ b/spring-cloud-kubernetes-integration-tests/discovery/tests/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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/spring-cloud-kubernetes-integration-tests/discovery/tests/src/test/resources/arquillian.xml b/spring-cloud-kubernetes-integration-tests/discovery/tests/src/test/resources/arquillian.xml
index 9d588056..60d3cbe7 100644
--- a/spring-cloud-kubernetes-integration-tests/discovery/tests/src/test/resources/arquillian.xml
+++ b/spring-cloud-kubernetes-integration-tests/discovery/tests/src/test/resources/arquillian.xml
@@ -1,6 +1,6 @@
 <arquillian xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 			xmlns="http://jboss.org/schema/arquillian"
-			xsi:schemaLocation="http://jboss.org/schema/arquillian http://jboss.org/schema/arquillian/arquillian_1_0.xsd">
+			xsi:schemaLocation="http://jboss.org/schema/arquillian https://jboss.org/schema/arquillian/arquillian_1_0.xsd">
 
 	<extension qualifier="kubernetes">
 		<property name="namespace.use.existing">default</property>
diff --git a/spring-cloud-kubernetes-integration-tests/istio/pom.xml b/spring-cloud-kubernetes-integration-tests/istio/pom.xml
index c53d7e22..7cec536d 100644
--- a/spring-cloud-kubernetes-integration-tests/istio/pom.xml
+++ b/spring-cloud-kubernetes-integration-tests/istio/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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/spring-cloud-kubernetes-integration-tests/istio/src/test/resources/arquillian.xml b/spring-cloud-kubernetes-integration-tests/istio/src/test/resources/arquillian.xml
index 58f2aae0..df3d69c9 100644
--- a/spring-cloud-kubernetes-integration-tests/istio/src/test/resources/arquillian.xml
+++ b/spring-cloud-kubernetes-integration-tests/istio/src/test/resources/arquillian.xml
@@ -1,6 +1,6 @@
 <arquillian xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 			xmlns="http://jboss.org/schema/arquillian"
-			xsi:schemaLocation="http://jboss.org/schema/arquillian http://jboss.org/schema/arquillian/arquillian_1_0.xsd">
+			xsi:schemaLocation="http://jboss.org/schema/arquillian https://jboss.org/schema/arquillian/arquillian_1_0.xsd">
 
 	<extension qualifier="kubernetes">
 		<property name="namespace.use.existing">istio-test</property>
diff --git a/spring-cloud-kubernetes-integration-tests/pom.xml b/spring-cloud-kubernetes-integration-tests/pom.xml
index 54173fd2..1b0ecd24 100644
--- a/spring-cloud-kubernetes-integration-tests/pom.xml
+++ b/spring-cloud-kubernetes-integration-tests/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-kubernetes-integration-tests/simple-configmap/pom.xml b/spring-cloud-kubernetes-integration-tests/simple-configmap/pom.xml
index 014a6ed8..e7d37130 100644
--- a/spring-cloud-kubernetes-integration-tests/simple-configmap/pom.xml
+++ b/spring-cloud-kubernetes-integration-tests/simple-configmap/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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/spring-cloud-kubernetes-integration-tests/simple-configmap/src/test/resources/arquillian.xml b/spring-cloud-kubernetes-integration-tests/simple-configmap/src/test/resources/arquillian.xml
index 9d588056..60d3cbe7 100644
--- a/spring-cloud-kubernetes-integration-tests/simple-configmap/src/test/resources/arquillian.xml
+++ b/spring-cloud-kubernetes-integration-tests/simple-configmap/src/test/resources/arquillian.xml
@@ -1,6 +1,6 @@
 <arquillian xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 			xmlns="http://jboss.org/schema/arquillian"
-			xsi:schemaLocation="http://jboss.org/schema/arquillian http://jboss.org/schema/arquillian/arquillian_1_0.xsd">
+			xsi:schemaLocation="http://jboss.org/schema/arquillian https://jboss.org/schema/arquillian/arquillian_1_0.xsd">
 
 	<extension qualifier="kubernetes">
 		<property name="namespace.use.existing">default</property>
diff --git a/spring-cloud-kubernetes-integration-tests/simple-core/pom.xml b/spring-cloud-kubernetes-integration-tests/simple-core/pom.xml
index d82d4dc3..7ddb79e6 100644
--- a/spring-cloud-kubernetes-integration-tests/simple-core/pom.xml
+++ b/spring-cloud-kubernetes-integration-tests/simple-core/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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/spring-cloud-kubernetes-integration-tests/simple-core/src/test/resources/arquillian.xml b/spring-cloud-kubernetes-integration-tests/simple-core/src/test/resources/arquillian.xml
index 9d588056..60d3cbe7 100644
--- a/spring-cloud-kubernetes-integration-tests/simple-core/src/test/resources/arquillian.xml
+++ b/spring-cloud-kubernetes-integration-tests/simple-core/src/test/resources/arquillian.xml
@@ -1,6 +1,6 @@
 <arquillian xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 			xmlns="http://jboss.org/schema/arquillian"
-			xsi:schemaLocation="http://jboss.org/schema/arquillian http://jboss.org/schema/arquillian/arquillian_1_0.xsd">
+			xsi:schemaLocation="http://jboss.org/schema/arquillian https://jboss.org/schema/arquillian/arquillian_1_0.xsd">
 
 	<extension qualifier="kubernetes">
 		<property name="namespace.use.existing">default</property>
diff --git a/spring-cloud-kubernetes-istio/pom.xml b/spring-cloud-kubernetes-istio/pom.xml
index 151a07c0..5b06fbf6 100644
--- a/spring-cloud-kubernetes-istio/pom.xml
+++ b/spring-cloud-kubernetes-istio/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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">
 	<parent>
 		<artifactId>spring-cloud-kubernetes</artifactId>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-kubernetes-leader/pom.xml b/spring-cloud-kubernetes-leader/pom.xml
index a0b9469e..8b9781d1 100644
--- a/spring-cloud-kubernetes-leader/pom.xml
+++ b/spring-cloud-kubernetes-leader/pom.xml
@@ -17,7 +17,7 @@
   -->
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-kubernetes-ribbon/pom.xml b/spring-cloud-kubernetes-ribbon/pom.xml
index 023525cb..95a176f9 100644
--- a/spring-cloud-kubernetes-ribbon/pom.xml
+++ b/spring-cloud-kubernetes-ribbon/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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">
 	<parent>
 		<artifactId>spring-cloud-kubernetes</artifactId>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-starter-kubernetes-all/pom.xml b/spring-cloud-starter-kubernetes-all/pom.xml
index 8ce48a79..7147896a 100644
--- a/spring-cloud-starter-kubernetes-all/pom.xml
+++ b/spring-cloud-starter-kubernetes-all/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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">
 	<parent>
 		<artifactId>spring-cloud-kubernetes</artifactId>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-starter-kubernetes-config/pom.xml b/spring-cloud-starter-kubernetes-config/pom.xml
index 50422ef5..4b278a0b 100644
--- a/spring-cloud-starter-kubernetes-config/pom.xml
+++ b/spring-cloud-starter-kubernetes-config/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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">
 	<parent>
 		<artifactId>spring-cloud-kubernetes</artifactId>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-starter-kubernetes-ribbon/pom.xml b/spring-cloud-starter-kubernetes-ribbon/pom.xml
index 252e3f3a..9ddbddb4 100644
--- a/spring-cloud-starter-kubernetes-ribbon/pom.xml
+++ b/spring-cloud-starter-kubernetes-ribbon/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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">
 	<parent>
 		<artifactId>spring-cloud-kubernetes</artifactId>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/spring-cloud-starter-kubernetes/pom.xml b/spring-cloud-starter-kubernetes/pom.xml
index e6bcda5c..f016449c 100644
--- a/spring-cloud-starter-kubernetes/pom.xml
+++ b/spring-cloud-starter-kubernetes/pom.xml
@@ -18,7 +18,7 @@
 
 <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 		 xmlns="http://maven.apache.org/POM/4.0.0"
-		 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">
 	<parent>
 		<artifactId>spring-cloud-kubernetes</artifactId>
 		<groupId>org.springframework.cloud</groupId>
diff --git a/src/checkstyle/checkstyle-suppressions.xml b/src/checkstyle/checkstyle-suppressions.xml
index a32117d2..c4698b11 100644
--- a/src/checkstyle/checkstyle-suppressions.xml
+++ b/src/checkstyle/checkstyle-suppressions.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <!DOCTYPE suppressions PUBLIC
 	"-//Puppy Crawl//DTD Suppressions 1.1//EN"
-	"http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
+	"https://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
 <suppressions>
 	<suppress files=".*KubernetesCatalogWatchTest.*"
 			  checks="(Javadoc*|HideUtility*|LineLength*)"/>