http to central not supported anymore, switch to https
diff --git a/core-it-suite/pom.xml b/core-it-suite/pom.xml
index 9bd8698..1830219 100644
--- a/core-it-suite/pom.xml
+++ b/core-it-suite/pom.xml
@@ -72,7 +72,7 @@
       use for the tests. -->
     <preparedMavenHome>${mavenHome}</preparedMavenHome>
     <!-- default properties used to filter the global settings -->
-    <maven.it.central>http://repo1.maven.org/maven2</maven.it.central>
+    <maven.it.central>https://repo1.maven.org/maven2</maven.it.central>
     <proxy.active>false</proxy.active>
     <proxy.host>localhost</proxy.host>
     <proxy.port>80</proxy.port>
diff --git a/core-it-suite/src/test/resources/it0041/settings.xml b/core-it-suite/src/test/resources/it0041/settings.xml
index d5190b3..e5ee37b 100644
--- a/core-it-suite/src/test/resources/it0041/settings.xml
+++ b/core-it-suite/src/test/resources/it0041/settings.xml
@@ -26,7 +26,7 @@
       <repositories>
         <repository>
           <id>central</id>
-          <url>http://repo1.maven.org/maven2</url>
+          <url>https://repo1.maven.org/maven2</url>
           <releases>
             <checksumPolicy>ignore</checksumPolicy>
           </releases>
@@ -38,7 +38,7 @@
       <pluginRepositories>
         <pluginRepository>
           <id>central</id>
-          <url>http://repo1.maven.org/maven2</url>
+          <url>https://repo1.maven.org/maven2</url>
           <releases>
             <checksumPolicy>ignore</checksumPolicy>
           </releases>
diff --git a/core-it-suite/src/test/resources/mng-0507/settings.xml b/core-it-suite/src/test/resources/mng-0507/settings.xml
index d5190b3..e5ee37b 100644
--- a/core-it-suite/src/test/resources/mng-0507/settings.xml
+++ b/core-it-suite/src/test/resources/mng-0507/settings.xml
@@ -26,7 +26,7 @@
       <repositories>
         <repository>
           <id>central</id>
-          <url>http://repo1.maven.org/maven2</url>
+          <url>https://repo1.maven.org/maven2</url>
           <releases>
             <checksumPolicy>ignore</checksumPolicy>
           </releases>
@@ -38,7 +38,7 @@
       <pluginRepositories>
         <pluginRepository>
           <id>central</id>
-          <url>http://repo1.maven.org/maven2</url>
+          <url>https://repo1.maven.org/maven2</url>
           <releases>
             <checksumPolicy>ignore</checksumPolicy>
           </releases>
diff --git a/core-it-suite/src/test/resources/mng-3680/repo/org/apache/maven/its/mng3680/direct/0.1/direct-0.1.pom b/core-it-suite/src/test/resources/mng-3680/repo/org/apache/maven/its/mng3680/direct/0.1/direct-0.1.pom
index 1f5dd2e..1302093 100644
--- a/core-it-suite/src/test/resources/mng-3680/repo/org/apache/maven/its/mng3680/direct/0.1/direct-0.1.pom
+++ b/core-it-suite/src/test/resources/mng-3680/repo/org/apache/maven/its/mng3680/direct/0.1/direct-0.1.pom
@@ -45,7 +45,7 @@
   -->

   <repositories>

     <id>imaginary-repo</id>

-    <url>http://repository.imaginary/</url>

+    <url>https://repository.imaginary/</url>

   </repositories>

 

   <distributionManagement>

diff --git a/core-it-suite/src/test/resources/mng-4193/pom.xml b/core-it-suite/src/test/resources/mng-4193/pom.xml
index 22d1b36..25d5e1e 100644
--- a/core-it-suite/src/test/resources/mng-4193/pom.xml
+++ b/core-it-suite/src/test/resources/mng-4193/pom.xml
@@ -36,11 +36,11 @@
     <!-- The duplicate repository id should cause a validation error during a build -->
     <repository>
       <id>non-unique-id</id>
-      <url>http://repo1.maven.org</url>
+      <url>https://repo1.maven.org</url>
     </repository>
     <repository>
       <id>non-unique-id</id>
-      <url>http://repo2.maven.org</url>
+      <url>https://repo2.maven.org</url>
     </repository>
   </repositories>
 </project>
diff --git a/core-it-suite/src/test/resources/mng-4403/repo/org/apache/maven/its/mng4403/b/0.1/b-0.1.pom b/core-it-suite/src/test/resources/mng-4403/repo/org/apache/maven/its/mng4403/b/0.1/b-0.1.pom
index 702d85e..8ffdd82 100644
--- a/core-it-suite/src/test/resources/mng-4403/repo/org/apache/maven/its/mng4403/b/0.1/b-0.1.pom
+++ b/core-it-suite/src/test/resources/mng-4403/repo/org/apache/maven/its/mng4403/b/0.1/b-0.1.pom
@@ -112,21 +112,21 @@
     <!-- duplicate repository id's (MNG-4193) -->

     <repository>

       <id>non-unique-id</id>

-      <url>http://repo1.maven.org</url>

+      <url>https://repo1.maven.org</url>

     </repository>

     <repository>

       <id>non-unique-id</id>

-      <url>http://repo2.maven.org</url>

+      <url>https://repo2.maven.org</url>

     </repository>

   </repositories>

   <pluginRepositories>

     <pluginRepository>

       <id>non-unique-id</id>

-      <url>http://repo1.maven.org</url>

+      <url>https://repo1.maven.org</url>

     </pluginRepository>

     <pluginRepository>

       <id>non-unique-id</id>

-      <url>http://repo2.maven.org</url>

+      <url>https://repo2.maven.org</url>

     </pluginRepository>

   </pluginRepositories>

 

@@ -171,21 +171,21 @@
         <!-- duplicate repository id's (MNG-4193) -->

         <repository>

           <id>non-unique-id</id>

-          <url>http://repo1.maven.org</url>

+          <url>https://repo1.maven.org</url>

         </repository>

         <repository>

           <id>non-unique-id</id>

-          <url>http://repo2.maven.org</url>

+          <url>https://repo2.maven.org</url>

         </repository>

       </repositories>

       <pluginRepositories>

         <pluginRepository>

           <id>non-unique-id</id>

-          <url>http://repo1.maven.org</url>

+          <url>https://repo1.maven.org</url>

         </pluginRepository>

         <pluginRepository>

           <id>non-unique-id</id>

-          <url>http://repo2.maven.org</url>

+          <url>https://repo2.maven.org</url>

         </pluginRepository>

       </pluginRepositories>

     </profile>

diff --git a/core-it-suite/src/test/resources/mng-4488/repo/org/apache/maven/its/mng4488/parent/0.1/parent-0.1.pom b/core-it-suite/src/test/resources/mng-4488/repo/org/apache/maven/its/mng4488/parent/0.1/parent-0.1.pom
index 699a103..358b08a 100644
--- a/core-it-suite/src/test/resources/mng-4488/repo/org/apache/maven/its/mng4488/parent/0.1/parent-0.1.pom
+++ b/core-it-suite/src/test/resources/mng-4488/repo/org/apache/maven/its/mng4488/parent/0.1/parent-0.1.pom
@@ -38,11 +38,11 @@
     <!-- duplicate repositories -->

     <repository>

       <id>mng4488</id>

-      <url>http://repo1.maven.org/maven2</url>

+      <url>https://repo1.maven.org/maven2</url>

     </repository>

     <repository>

       <id>mng4488</id>

-      <url>http://repo1.maven.org/maven2</url>

+      <url>https://repo1.maven.org/maven2</url>

     </repository>

   </repositories>

 

diff --git a/core-it-suite/src/test/resources/mng-4991/repo/org/apache/maven/its/mng4991/parent/0.1/parent-0.1.pom b/core-it-suite/src/test/resources/mng-4991/repo/org/apache/maven/its/mng4991/parent/0.1/parent-0.1.pom
index e0ac3f4..794a843 100644
--- a/core-it-suite/src/test/resources/mng-4991/repo/org/apache/maven/its/mng4991/parent/0.1/parent-0.1.pom
+++ b/core-it-suite/src/test/resources/mng-4991/repo/org/apache/maven/its/mng4991/parent/0.1/parent-0.1.pom
@@ -30,7 +30,7 @@
   <repositories>

     <repository>

       <id>central</id>

-      <url>http://repo1.maven.org/maven2</url>

+      <url>https://repo1.maven.org/maven2</url>

       <releases>

         <enabled>true</enabled>

         <checksumPolicy>ignore</checksumPolicy>

diff --git a/core-it-support/maven-it-sample/pom.xml b/core-it-support/maven-it-sample/pom.xml
index a833f4b..843f73d 100644
--- a/core-it-support/maven-it-sample/pom.xml
+++ b/core-it-support/maven-it-sample/pom.xml
@@ -52,7 +52,7 @@
     <repository>
       <id>apache.snapshots</id>
       <name>Apache Snapshot Repository</name>
-      <url>http://repository.apache.org/snapshots</url>
+      <url>https://repository.apache.org/snapshots</url>
       <releases>
         <enabled>false</enabled>
       </releases>
diff --git a/pom.xml b/pom.xml
index d2564c5..7fd0c59 100644
--- a/pom.xml
+++ b/pom.xml
@@ -90,7 +90,7 @@
     <repository>
       <id>apache.snapshots</id>
       <name>Apache Snapshot Repository</name>
-      <url>http://repository.apache.org/snapshots</url>
+      <url>https://repository.apache.org/snapshots</url>
       <releases>
         <enabled>false</enabled>
       </releases>