diff --git a/srcpkgs/gtkmm/template b/srcpkgs/gtkmm/template
index 7438d92df5f..f1a70dae19c 100644
--- a/srcpkgs/gtkmm/template
+++ b/srcpkgs/gtkmm/template
@@ -1,6 +1,6 @@
 # Template build file for 'gtkmm'.
 pkgname=gtkmm
-version=3.18.1
+version=3.20.1
 revision=1
 build_style=gnu-configure
 configure_args="--disable-documentation"
@@ -11,7 +11,7 @@ maintainer="Juan RP <xtraeme@voidlinux.eu>"
 homepage="http://gtkmm.sourceforge.net/"
 license="LGPL-2.1"
 distfiles="${GNOME_SITE}/gtkmm/${version%.*}/gtkmm-$version.tar.xz"
-checksum=747dff6164e5367db6fae6c30f01f0cb6bc14652353b1bdb33de8a69aa7b2520
+checksum=051de1b8756ca6ec61f26264338cfc3060af936fd70bf4558bfe1e115418c612
 
 pre_configure() {
 	NOCONFIGURE=1 ./autogen.sh