diff --git a/fetchmail_thread_default/static/description/index.html b/fetchmail_thread_default/static/description/index.html
index daa2a7856..92f2ea00d 100644
--- a/fetchmail_thread_default/static/description/index.html
+++ b/fetchmail_thread_default/static/description/index.html
@@ -3,7 +3,7 @@
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-<meta name="generator" content="Docutils 0.14: http://docutils.sourceforge.net/" />
+<meta name="generator" content="Docutils 0.15.1: http://docutils.sourceforge.net/" />
 <title>Default Thread For Unbounded Emails</title>
 <style type="text/css">
 
