diff --git a/srcpkgs/gtkmm/template b/srcpkgs/gtkmm/template
index 72bcbe2388..814093415d 100644
--- a/srcpkgs/gtkmm/template
+++ b/srcpkgs/gtkmm/template
@@ -10,8 +10,8 @@ short_desc="C++ bindings for The GTK+ toolkit (v2)"
 maintainer="Juan RP <xtraeme@gmail.com>"
 homepage="http://gtkmm.sourceforge.net/"
 license="LGPL-2.1"
-distfiles="${GNOME_SITE}/gtkmm/3.7/gtkmm-$version.tar.xz"
-checksum=e9a6bf2feac43fd8367e38e4b585cd5790745a6330014cf13c2d3e322a8dd916
+distfiles="${GNOME_SITE}/gtkmm/3.8/gtkmm-$version.tar.xz"
+checksum=dbddb143fe671ee321d19de2dbae00c0f67e78ce90447227b23062137b1828bd
 long_desc="
  gtkmm (previously known as Gtk--) is the official C++ interface for the
  popular GUI library GTK+. Highlights include typesafe callbacks, widgets