diff --git a/pom.xml b/pom.xml
index c6782673..0e331f5c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -15,7 +15,7 @@
    See the License for the specific language governing permissions and
    limitations under the License.
 -->
-<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/maven-v4_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/maven-v4_0_0.xsd">
   <parent>
     <groupId>org.apache.commons</groupId>
     <artifactId>commons-parent</artifactId>
diff --git a/src/main/assembly/bin.xml b/src/main/assembly/bin.xml
index dea1cb7a..d0cfc010 100644
--- a/src/main/assembly/bin.xml
+++ b/src/main/assembly/bin.xml
@@ -16,7 +16,7 @@
 -->
 <assembly xmlns="http://maven.apache.org/ASSEMBLY/2.2.0"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/ASSEMBLY/2.2.0 http://maven.apache.org/xsd/assembly-2.2.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/ASSEMBLY/2.2.0 https://maven.apache.org/xsd/assembly-2.2.0.xsd">
     <id>bin</id>
     <formats>
         <format>tar.gz</format>
diff --git a/src/main/assembly/src.xml b/src/main/assembly/src.xml
index 589102e7..8f5c2861 100644
--- a/src/main/assembly/src.xml
+++ b/src/main/assembly/src.xml
@@ -16,7 +16,7 @@
 -->
 <assembly xmlns="http://maven.apache.org/ASSEMBLY/2.2.0"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-    xsi:schemaLocation="http://maven.apache.org/ASSEMBLY/2.2.0 http://maven.apache.org/xsd/assembly-2.2.0.xsd">
+    xsi:schemaLocation="http://maven.apache.org/ASSEMBLY/2.2.0 https://maven.apache.org/xsd/assembly-2.2.0.xsd">
     <id>src</id>
     <formats>
         <format>tar.gz</format>
diff --git a/src/site/site.xml b/src/site/site.xml
index bc2dd06e..92bc42cb 100644
--- a/src/site/site.xml
+++ b/src/site/site.xml
@@ -16,7 +16,7 @@
  limitations under the License.
 -->
 <project xmlns="http://maven.apache.org/DECORATION/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/DECORATION/1.1.0 http://maven.apache.org/xsd/decoration-1.1.0.xsd"
+  xsi:schemaLocation="http://maven.apache.org/DECORATION/1.1.0 https://maven.apache.org/xsd/decoration-1.1.0.xsd"
   name="DbUtils">
     <bannerRight>
         <name>Commons DbUtils</name>
diff --git a/src/site/xdoc/building.xml b/src/site/xdoc/building.xml
index e6ac0dd7..43726ca4 100644
--- a/src/site/xdoc/building.xml
+++ b/src/site/xdoc/building.xml
@@ -17,7 +17,7 @@
 -->
 <document xmlns="http://maven.apache.org/XDOC/2.0"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/XDOC/2.0 http://maven.apache.org/xsd/xdoc-2.0.xsd">
+  xsi:schemaLocation="http://maven.apache.org/XDOC/2.0 https://maven.apache.org/xsd/xdoc-2.0.xsd">
  <properties>
   <title>Building</title>
   <author email="dev@commons.apache.org">Commons Documentation Team</author>
diff --git a/src/site/xdoc/examples.xml b/src/site/xdoc/examples.xml
index 704ba8b4..f8f9f9cd 100644
--- a/src/site/xdoc/examples.xml
+++ b/src/site/xdoc/examples.xml
@@ -18,7 +18,7 @@
 
 <document xmlns="http://maven.apache.org/XDOC/2.0"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/XDOC/2.0 http://maven.apache.org/xsd/xdoc-2.0.xsd">
+  xsi:schemaLocation="http://maven.apache.org/XDOC/2.0 https://maven.apache.org/xsd/xdoc-2.0.xsd">
 
  <properties>
     <title>JDBC Utility Component -- Examples</title>
diff --git a/src/site/xdoc/index.xml b/src/site/xdoc/index.xml
index 927bad18..a9dc4cde 100644
--- a/src/site/xdoc/index.xml
+++ b/src/site/xdoc/index.xml
@@ -18,7 +18,7 @@
 
 <document xmlns="http://maven.apache.org/XDOC/2.0"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/XDOC/2.0 http://maven.apache.org/xsd/xdoc-2.0.xsd">
+  xsi:schemaLocation="http://maven.apache.org/XDOC/2.0 https://maven.apache.org/xsd/xdoc-2.0.xsd">
 
  <properties>
   <title>JDBC Utility Component</title>
diff --git a/src/site/xdoc/proposal.xml b/src/site/xdoc/proposal.xml
index 3bd20768..893e8718 100644
--- a/src/site/xdoc/proposal.xml
+++ b/src/site/xdoc/proposal.xml
@@ -16,7 +16,7 @@
 -->
 <document xmlns="http://maven.apache.org/XDOC/2.0"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-  xsi:schemaLocation="http://maven.apache.org/XDOC/2.0 http://maven.apache.org/xsd/xdoc-2.0.xsd">
+  xsi:schemaLocation="http://maven.apache.org/XDOC/2.0 https://maven.apache.org/xsd/xdoc-2.0.xsd">
 <properties>
 <title>Proposal for Commons DBUtils Package</title>
 </properties>