diff --git a/gnu/packages/glib.scm b/gnu/packages/glib.scm
index c5eea22845..ec1b953c83 100644
--- a/gnu/packages/glib.scm
+++ b/gnu/packages/glib.scm
@@ -3,6 +3,7 @@
 ;;; Copyright © 2013, 2015 Andreas Enge <andreas@enge.fr>
 ;;; Copyright © 2013 Nikita Karetnikov <nikita@karetnikov.org>
 ;;; Copyright © 2014, 2015 Mark H Weaver <mhw@netris.org>
+;;; Copyright © 2016 Efraim Flashner <efraim@flashner.co.il>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -433,7 +434,7 @@ has an ease of use unmatched by other C++ callback libraries.")
 (define glibmm
   (package
     (name "glibmm")
-    (version "2.46.1")
+    (version "2.46.3")
     (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnome/sources/glibmm/"
@@ -441,7 +442,7 @@ has an ease of use unmatched by other C++ callback libraries.")
                                  "/glibmm-" version ".tar.xz"))
              (sha256
               (base32
-               "1an4v1yk06svlmcyp1psk2a3bsn29s1a4gdx0ai2w788q6bfaiwn"))))
+               "1kw65mlabwdjw86jybxslncbnnx40hcx4z6xpq9i4ymjvsnm91n7"))))
     (build-system gnu-build-system)
     (arguments
      `(#:phases (alist-cons-before