diff --git a/CHANGELOG b/CHANGELOG
index 8fd0e67..35245ec 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,4 +1,8 @@
 # -*- mode: org -*-
+* v3.3.1    2021/06/17
+
+- Adjusted to breaking changes in EIEIO in Emacs 28.
+
 * v3.3.0    2021/05/30
 
 - The database is now being distributed as a text file instead of
diff --git a/epkg.org b/epkg.org
index d66147c..0484b4f 100644
--- a/epkg.org
+++ b/epkg.org
@@ -8,7 +8,7 @@
 #+TEXINFO_DIR_CATEGORY: Emacs
 #+TEXINFO_DIR_TITLE: Epkg: (epkg).
 #+TEXINFO_DIR_DESC: Browse the Emacsmirror's database
-#+SUBTITLE: for version 3.3.0
+#+SUBTITLE: for version 3.3.1
 
 #+TEXINFO_DEFFN: t
 #+OPTIONS: H:4 num:4 toc:2
@@ -20,7 +20,7 @@ With Epkg you can browse the Emacsmirror package database using an
 interface similar to that of ~package.el~.
 
 #+TEXINFO: @noindent
-This manual is for Epkg version 3.3.0.
+This manual is for Epkg version 3.3.1.
 
 #+BEGIN_QUOTE
 Copyright (C) 2016-2021 Jonas Bernoulli <jonas@bernoul.li>
diff --git a/epkg.texi b/epkg.texi
index 1b3e24f..ba1b814 100644
--- a/epkg.texi
+++ b/epkg.texi
@@ -31,7 +31,7 @@ General Public License for more details.
 @finalout
 @titlepage
 @title Epkg User Manual
-@subtitle for version 3.3.0
+@subtitle for version 3.3.1
 @author Jonas Bernoulli
 @page
 @vskip 0pt plus 1filll
@@ -48,7 +48,7 @@ With Epkg you can browse the Emacsmirror package database using an
 interface similar to that of @code{package.el}.
 
 @noindent
-This manual is for Epkg version 3.3.0.
+This manual is for Epkg version 3.3.1.
 
 @quotation
 Copyright (C) 2016-2021 Jonas Bernoulli <jonas@@bernoul.li>