Add change log.
diff --git a/annotation-file-utilities/changelog.html b/annotation-file-utilities/changelog.html
index 8ac7e12..be6b1f3 100644
--- a/annotation-file-utilities/changelog.html
+++ b/annotation-file-utilities/changelog.html
@@ -13,6 +13,12 @@
 
 <ul>
   <li>
+    Version 3.6.43 (released July 3, 2017):
+    <ul>
+        <li>Minor bug fixes and improvements.</li>
+    </ul>
+  </li>
+  <li>
     Version 3.6.42 (released June 1, 2017):
     <ul>
         <li>Minor bug fixes and improvements.</li>