diff --git a/atom/blog.xml b/atom/blog.xml
index c97ed81..547b821 100644
--- a/atom/blog.xml
+++ b/atom/blog.xml
@@ -2,12 +2,13 @@
 <feed xmlns="http://www.w3.org/2005/Atom">
     <id>https://git.sdf.org/baruchel/feeds/raw/branch/master/src/blog.rst</id>
     <title>Th. Baruchel's personal Atom feed</title>
+    <subtitle>Thomas Baruchel's casual blog concerning Computer Science</subtitle>
     <author>
         <name>Thomas Baruchel</name>
         <email>baruchel@sdf.org</email>
     </author>
     <rights>CC BY-SA 4.0</rights>
-    <updated>2022-11-05T15:24:47.592152</updated>
+    <updated>2022-11-05T15:32:51</updated>
     <link href="https://git.sdf.org/baruchel/feeds/raw/branch/master/src/blog.rst" />
     <link href="https://git.sdf.org/baruchel/feeds/raw/branch/master/atom/blog.xml" rel="self" />
     <generator uri="https://git.sdf.org/baruchel/feeds/src/branch/master/rst2atom.py">rst2atom</generator>
diff --git a/rst2atom.py b/rst2atom.py
index 655d5d1..8342c13 100644
--- a/rst2atom.py
+++ b/rst2atom.py
@@ -60,7 +60,7 @@ def find_date(d):
         for k in c.extract().split(" "):
             try:
                 t = dateutil.parser.parse(k)
-                return t.isoformat()
+                return t.isoformat(timespec='seconds')
             except dateutil.parser.ParserError:
                 pass
     raise dateutil.parser.ParserError
@@ -101,6 +101,7 @@ print("""<?xml version="1.0" encoding="utf-8"?>
 <feed xmlns="http://www.w3.org/2005/Atom">
     <id>%s</id>
     <title>%s</title>
+    <subtitle>%s</subtitle>
     <author>
         <name>%s</name>
         <email>%s</email>
@@ -113,10 +114,11 @@ print("""<?xml version="1.0" encoding="utf-8"?>
 """ % (
          meta["original-source"],
          html["title"],
+         meta["description"],
          docinfos["Author:"],
          docinfos["Contact:"],
          meta["copyright"],
-         datetime.datetime.now().isoformat(),
+         datetime.datetime.now().isoformat(timespec='seconds'),
          meta["original-source"],
          meta["syndication-source"],
          generator_uri, generator_name