diff --git a/marble-core/pom.xml b/marble-core/pom.xml
index 9d13ffa..a789a8e 100644
--- a/marble-core/pom.xml
+++ b/marble-core/pom.xml
@@ -1,6 +1,6 @@
 <?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="https://maven.apache.org/POM/4.0.0" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="https://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<groupId>org.marble</groupId>
@@ -24,14 +24,14 @@
 	<repositories>
 		<repository>
 			<id>spring-snapshots</id>
-			<url>http://repo.spring.io/snapshot</url>
+			<url>https://repo.spring.io/snapshot</url>
 			<snapshots>
 				<enabled>true</enabled>
 			</snapshots>
 		</repository>
 		<repository>
 			<id>spring-milestones</id>
-			<url>http://repo.spring.io/milestone</url>
+			<url>https://repo.spring.io/milestone</url>
 		</repository>
 		<repository>
 			<id>my-local-repo</id>
@@ -42,11 +42,11 @@
 	<pluginRepositories>
 		<pluginRepository>
 			<id>spring-snapshots</id>
-			<url>http://repo.spring.io/snapshot</url>
+			<url>https://repo.spring.io/snapshot</url>
 		</pluginRepository>
 		<pluginRepository>
 			<id>spring-milestones</id>
-			<url>http://repo.spring.io/milestone</url>
+			<url>https://repo.spring.io/milestone</url>
 		</pluginRepository>
 	</pluginRepositories>
 
diff --git a/pom.xml b/pom.xml
index c3c0e5c..180962d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,6 +1,6 @@
 <?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="https://maven.apache.org/POM/4.0.0" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="https://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
 	<groupId>org.marble</groupId>
@@ -74,7 +74,7 @@
 		<repository>
 			<id>spring-snapshots</id>
 			<name>Spring Snapshots</name>
-			<url>http://repo.spring.io/libs-snapshot-local</url>
+			<url>https://repo.spring.io/libs-snapshot-local</url>
 			<snapshots>
 				<enabled>true</enabled>
 			</snapshots>
@@ -82,7 +82,7 @@
 		<repository>
 			<id>spring-snapshots-continuous</id>
 			<name>Spring Snapshots Continuous</name>
-			<url>http://repo.spring.io/libs-snapshot-continuous-local</url>
+			<url>https://repo.spring.io/libs-snapshot-continuous-local</url>
 			<snapshots>
 				<enabled>true</enabled>
 			</snapshots>
@@ -90,7 +90,7 @@
 		<repository>
 			<id>spring-milestones</id>
 			<name>Spring Milestones</name>
-			<url>http://repo.spring.io/libs-milestone-local</url>
+			<url>https://repo.spring.io/libs-milestone-local</url>
 			<snapshots>
 				<enabled>false</enabled>
 			</snapshots>
@@ -98,7 +98,7 @@
 		<repository>
 			<id>spring-releases</id>
 			<name>Spring Releases</name>
-			<url>http://repo.spring.io/libs-release-local</url>
+			<url>https://repo.spring.io/libs-release-local</url>
 			<snapshots>
 				<enabled>false</enabled>
 			</snapshots>
@@ -108,7 +108,7 @@
 		<pluginRepository>
 			<id>spring-snapshots</id>
 			<name>Spring Snapshots</name>
-			<url>http://repo.spring.io/libs-snapshot-local</url>
+			<url>https://repo.spring.io/libs-snapshot-local</url>
 			<snapshots>
 				<enabled>true</enabled>
 			</snapshots>
@@ -116,7 +116,7 @@
 		<pluginRepository>
 			<id>spring-milestones</id>
 			<name>Spring Milestones</name>
-			<url>http://repo.spring.io/libs-milestone-local</url>
+			<url>https://repo.spring.io/libs-milestone-local</url>
 			<snapshots>
 				<enabled>false</enabled>
 			</snapshots>