diff --git a/gnu/packages/mail.scm b/gnu/packages/mail.scm
index 5af6102438..8563b474ad 100644
--- a/gnu/packages/mail.scm
+++ b/gnu/packages/mail.scm
@@ -33,6 +33,7 @@
 ;;; Copyright © 2020 Justus Winter <justus@sequoia-pgp.org>
 ;;; Copyright © 2020 Eric Brown <ecbrown@ericcbrown.com>
 ;;; Copyright © 2020 Maxim Cournoyer <maxim.cournoyer@gmail.com>
+;;; Copyright © 2020 Michael Rohleder <mike@rohleder.de>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -1550,14 +1551,14 @@ hashing scheme (such as scrypt) plug-in for @code{Dovecot}.")
 (define-public isync
   (package
     (name "isync")
-    (version "1.3.2")
+    (version "1.3.3")
     (source
      (origin
        (method url-fetch)
        (uri (string-append "mirror://sourceforge/isync/isync/"
                            version "/isync-" version ".tar.gz"))
        (sha256 (base32
-                "01g8hk9gisz67204k8ad7w7i3zp9vg2c68lscld44bwiii1d21li"))))
+                "10n8ykag0q3ws6fc15xqyg3v980v5nq3kzpablly2rh2z7vkn8gj"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("perl" ,perl)))