diff --git a/ReleaseInstructions b/ReleaseInstructions
index 4eae6dd..7a683a9 100644
--- a/ReleaseInstructions
+++ b/ReleaseInstructions
@@ -201,7 +201,7 @@
 
 Related Information
 
-http://www.apache.org/dev/release-publishing.html
-http://jakarta.apache.org/commons/releases/
-http://wiki.apache.org/jakarta-commons/SigningReleases
+https://www.apache.org/dev/release-publishing.html
+https://jakarta.apache.org/commons/releases/
+https://wiki.apache.org/jakarta-commons/SigningReleases
 
diff --git a/ivy.xml b/ivy.xml
index b93fa5c..d86edd0 100644
--- a/ivy.xml
+++ b/ivy.xml
@@ -76,9 +76,9 @@
               revision="${artifact.version}"
               publication="${artifact.publication.datetime}">
           <license name="Apache Software License 2.0"
-                   url="http://www.apache.org/licenses/LICENSE-2.0"/>
+                   url="https://www.apache.org/licenses/LICENSE-2.0"/>
           <ivyauthor name="Apache Ant Development Team"
-                     url="http://ant.apache.org/"/>
+                     url="https://ant.apache.org/"/>
         </info>
         <publications xmlns:e="urn:ant.apache.org:ivy-extras">
           <artifact name="${artifact.name}" type="pom" ext="pom"/>
@@ -110,7 +110,7 @@
  
 
   <!-- ========================================================== -->
-  <!-- Bootstraping Ivy as in http://ant.apache.org/ivy/history/latest-milestone/samples/build.xml -->
+  <!-- Bootstraping Ivy as in https://ant.apache.org/ivy/history/latest-milestone/samples/build.xml -->
   <!-- ========================================================== -->
 
   
@@ -118,7 +118,7 @@
     <mkdir dir="${ivy.jar.dir}"/>
     <!-- download Ivy from web site so that it can be used even without any special installation -->
     <echo message="installing ivy..."/>
-    <get src="http://repo1.maven.org/maven2/org/apache/ivy/ivy/${ivy.install.version}/ivy-${ivy.install.version}.jar" dest="${ivy.jar.file}" usetimestamp="true"/>
+    <get src="https://repo1.maven.org/maven2/org/apache/ivy/ivy/${ivy.install.version}/ivy-${ivy.install.version}.jar" dest="${ivy.jar.file}" usetimestamp="true"/>
   </target>
   
   <!-- ================================= 
diff --git a/m2.xml b/m2.xml
index ec316be..9703856 100644
--- a/m2.xml
+++ b/m2.xml
@@ -80,13 +80,13 @@
         <licenses>
           <license>
             <name>The Apache Software License, Version 2.0</name>
-            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+            <url>https://www.apache.org/licenses/LICENSE-2.0.txt</url>
             <distribution>repo</distribution>
           </license>
         </licenses>
         <organization>
           <name>The Apache Software Foundation</name>
-          <url>http://www.apache.org/</url>
+          <url>https://www.apache.org/</url>
         </organization>
         <dependencies/>
       </project>
diff --git a/prepare.xml b/prepare.xml
index 8499ea6..b3a64f4 100644
--- a/prepare.xml
+++ b/prepare.xml
@@ -27,7 +27,7 @@
 
   <!-- Which released version of AntUnit to use, where to download, where to store. -->
   <property name="antunit.version" value="1.3"/>
-  <property name="antunit.url" value="http://repo1.maven.org/maven2/org/apache/ant/ant-antunit/${antunit.version}/ant-antunit-${antunit.version}.jar"/>
+  <property name="antunit.url" value="https://repo1.maven.org/maven2/org/apache/ant/ant-antunit/${antunit.version}/ant-antunit-${antunit.version}.jar"/>
   <property name="antunit.file" value="ant-antunit.jar"/>
 
   <!-- Skip unnecessary tasks. -->
diff --git a/stylesheets/changes2readmehtml.xsl b/stylesheets/changes2readmehtml.xsl
index 9be54b8..7ab4208 100644
--- a/stylesheets/changes2readmehtml.xsl
+++ b/stylesheets/changes2readmehtml.xsl
@@ -52,7 +52,7 @@
       <xsl:value-of select="text()"/>
       <xsl:if test="@issue and not(@issue='')">
         <a>
-          <xsl:attribute name="href">http://issues.apache.org/bugzilla/show_bug.cgi?id=<xsl:value-of select="@issue"/></xsl:attribute>
+          <xsl:attribute name="href">https://issues.apache.org/bugzilla/show_bug.cgi?id=<xsl:value-of select="@issue"/></xsl:attribute>
           <xsl:text>BugZilla Issue </xsl:text><xsl:value-of select="@issue"/><xsl:text></xsl:text>
         </a>
       </xsl:if>