diff --git a/gnu/packages/mtools.scm b/gnu/packages/mtools.scm
index ba2dbdb0fd..6e662a80c6 100644
--- a/gnu/packages/mtools.scm
+++ b/gnu/packages/mtools.scm
@@ -1,7 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2013 John Darrington <jmd@gnu.org>
 ;;; Copyright © 2015, 2019 Ludovic Courtès <ludo@gnu.org>
-;;; Copyright © 2018, 2020 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2018, 2020, 2021 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018 Efraim Flashner <efraim@flashner.co.il>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -29,14 +29,14 @@
 (define-public mtools
   (package
     (name "mtools")
-    (version "4.0.26")
+    (version "4.0.27")
     (source (origin
               (method url-fetch)
               (uri (string-append "mirror://gnu/mtools/mtools-"
                                   version ".tar.bz2"))
               (sha256
                (base32
-                "06pabnjc4r2vv3dzfm6q97g6jbp2k5bhmcdwv2cf25ka8y5ir7sk"))
+                "1crqi10adwfahj8xyw60lx70hkpcc5g00b5r8277cm2f4kcwi24w"))
               (patches
                (search-patches "mtools-mformat-uninitialized.patch"))))
     (build-system gnu-build-system)