diff --git a/network/claws-mail/claws-mail.SlackBuild b/network/claws-mail/claws-mail.SlackBuild
index edd3ded5dd..b1f07cf658 100644
--- a/network/claws-mail/claws-mail.SlackBuild
+++ b/network/claws-mail/claws-mail.SlackBuild
@@ -2,7 +2,7 @@
 #
 # Slackware build script for claws-mail
 #
-# Copyright 2009-2019  Erik W. Hanson, Minneapolis, MN, USA
+# Copyright 2009-2022  Erik W. Hanson, Minneapolis, MN, USA
 # All rights reserved.
 #
 # Redistribution and use of this script, with or without modification, is
@@ -25,7 +25,7 @@
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=claws-mail
-VERSION=${VERSION:-3.17.8}
+VERSION=${VERSION:-4.0.0}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
diff --git a/network/claws-mail/claws-mail.info b/network/claws-mail/claws-mail.info
index f3afee78d4..c27122d3b4 100644
--- a/network/claws-mail/claws-mail.info
+++ b/network/claws-mail/claws-mail.info
@@ -1,8 +1,8 @@
 PRGNAM="claws-mail"
-VERSION="3.17.8"
+VERSION="4.0.0"
 HOMEPAGE="https://www.claws-mail.org/"
-DOWNLOAD="https://www.claws-mail.org/releases/claws-mail-3.17.8.tar.xz"
-MD5SUM="9a29794503e17921b14a5265425181db"
+DOWNLOAD="https://www.claws-mail.org/releases/claws-mail-4.0.0.tar.xz"
+MD5SUM="96144e56900bb94dc69c04fed548bd79"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
 REQUIRES="libetpan"
diff --git a/network/claws-mail/slack-desc b/network/claws-mail/slack-desc
index 831e0ebed9..6836517d23 100644
--- a/network/claws-mail/slack-desc
+++ b/network/claws-mail/slack-desc
@@ -8,7 +8,7 @@
           |-----handy-ruler------------------------------------------------------|
 claws-mail: claws-mail (a user-friendly, lightweight, and fast email client)
 claws-mail:
-claws-mail: Claws Mail is an email client (and news reader) based on GTK+2
+claws-mail: Claws Mail is an email client (and news reader) based on GTK+3
 claws-mail: featuring quick response, graceful and sophisticated interface,
 claws-mail: easy configuration, intuitive operation, abundant features, and
 claws-mail: extensibility.