diff --git a/gnu/packages/gtk.scm b/gnu/packages/gtk.scm
index a8bc2e42ce..64bf802c6f 100644
--- a/gnu/packages/gtk.scm
+++ b/gnu/packages/gtk.scm
@@ -1094,7 +1094,7 @@ toolkit.")
 (define-public gtkmm
   (package
     (name "gtkmm")
-    (version "3.22.2")
+    (version "3.24.0")
     (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnome/sources/" name "/"
@@ -1102,7 +1102,7 @@ toolkit.")
                                  name "-" version ".tar.xz"))
              (sha256
               (base32
-               "1400535lhyya462pfx8bp11k3mg3jsbdghlpygskd5ai665dkbwi"))))
+               "0hxaq4x9jqj8vvnv3sb6nwapz83v8lclbm887qqci0g50llcjpyg"))))
     (build-system gnu-build-system)
     (native-inputs `(("pkg-config" ,pkg-config)
                      ("glib" ,glib "bin")        ;for 'glib-compile-resources'