diff --git a/configure b/configure
index 1f4f718d..1154adea 100755
--- a/configure
+++ b/configure
@@ -36,7 +36,7 @@ MES_ARENA=100000000 exec ${SCHEME-guile} -L . --no-auto-compile -e '(configure)'
 (define PACKAGE "mes")
 (define PACKAGE-NAME "GNU Mes")
 (define PACKAGE-BUGREPORT "bug-mes@gnu.org")
-(define VERSION "0.19")
+(define VERSION "0.20")
 
 (cond-expand
  (guile)
@@ -435,7 +435,7 @@ Some influential environment variables:
                              (make-dep "blood-elf" #:version '(0 6))
                              (make-dep "diff" #:optional? #t)
                              (make-dep "guile" #:version '(2 0) #:commands '("guile-2.2" "guile-2.0" "guile-2" "guile") #:optional? #t)
-                             (make-dep "mes" #:version '(0 18) #:optional? #t)
+                             (make-dep "mes" #:version '(0 20) #:optional? #t)
                              (make-dep "guix" #:version '(0 13) #:optional? #t)
                              (make-dep "ar" #:version '(2 10) #:optional? #t)
                              (make-dep "sh" #:version '(0) #:optional? #t)
diff --git a/configure.sh b/configure.sh
index 271f11f5..4f8b6077 100755
--- a/configure.sh
+++ b/configure.sh
@@ -20,7 +20,7 @@
 
 set -e
 
-VERSION=0.19
+VERSION=0.20
 srcdir=${srcdir-$(dirname $0)}
 . ${srcdest}build-aux/trace.sh
 
diff --git a/guix/git/mes.scm b/guix/git/mes.scm
index 811e67bd..3760f6d5 100644
--- a/guix/git/mes.scm
+++ b/guix/git/mes.scm
@@ -122,7 +122,7 @@ extensive examples, including parsers for the Javascript and C99 languages.")
 
 (define-public mes
   (let ((triplet "i686-unknown-linux-gnu")
-        (version "0.19"))
+        (version "0.20"))
     (package
       (name "mes")
       (version version)
@@ -131,7 +131,7 @@ extensive examples, including parsers for the Javascript and C99 languages.")
                 (uri (string-append
                       "https://ftp.gnu.org/pub/gnu/mes/mes-" version ".tar.gz"))
                 (sha256
-                 (base32 #!mes!# "1dsaaqyanzsq9m5wrcd2bjhb3qd6928c9q97rg5r730pyqjwxyxf"))))
+                 (base32 #!mes!# "06qkwkahcpzk5v4qydpvcvzm7lx8g8pflc48f9l7bpjz6hl5lk4s"))))
       (build-system gnu-build-system)
       (supported-systems '("i686-linux" "x86_64-linux"))
       (propagated-inputs
@@ -164,7 +164,7 @@ Guile.")
       (license gpl3+))))
 
 (define-public mes.git
- (let ((version "0.19")
+ (let ((version "0.20")
         (revision "0")
         (commit (read-string (open-pipe "git show HEAD | head -1 | cut -d ' ' -f 2" OPEN_READ))))
     (package