diff --git a/chapter01/changelog.xml b/chapter01/changelog.xml
index b02437f6d..e2f199f3b 100644
--- a/chapter01/changelog.xml
+++ b/chapter01/changelog.xml
@@ -43,6 +43,16 @@
     appropriate for the entry or if needed the entire day's listitem.
     -->
 
+    <listitem>
+      <para>2021-04-06</para>
+      <itemizedlist>
+        <listitem>
+          <para>The XML source code of this book is migrated from SVN
+          to Git.</para>
+        </listitem>
+      </itemizedlist>
+    </listitem>
+
     <listitem>
       <para>2021-03-26</para>
       <itemizedlist>