diff --git a/gnu/packages/gtk.scm b/gnu/packages/gtk.scm
index b54279ec96..6e5bac0968 100644
--- a/gnu/packages/gtk.scm
+++ b/gnu/packages/gtk.scm
@@ -399,7 +399,7 @@ printing and other features typical of a source code editor.")
 (define-public gtksourceview
  (package
    (name "gtksourceview")
-   (version "3.24.8")
+   (version "4.0.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnome/sources/" name "/"
@@ -407,7 +407,7 @@ printing and other features typical of a source code editor.")
                                  name "-" version ".tar.xz"))
              (sha256
               (base32
-               "1zinqid62zjcsq7vy1y4mq1qh3hzd3zj7p8np7g0bdqd37zvi6qy"))))
+               "1b2z9c0skxrgw2vh08hv6qxky8jbvamc4rgww82j0kpp533rz0hm"))))
    (build-system gnu-build-system)
    (arguments
     '(#:phases