diff --git a/2790.patch b/2790.patch
new file mode 100644
index 0000000..a6efe98
--- /dev/null
+++ b/2790.patch
@@ -0,0 +1,65 @@
+From eb24388f1730918edd9565d9e5d09340ec0b3b08 Mon Sep 17 00:00:00 2001
+From: Harald van Dijk <harald@gigawatt.nl>
+Date: Wed, 17 Feb 2021 09:13:49 +0000
+Subject: [PATCH] Fix build with glib 2.67.3.
+
+As of glib 2.67.3, <glib.h> can no longer be included in extern "C"
+blocks. It was indirectly included by both "types.h" and "color.h".
+"types.h" already does not need to be wrapped in an extern "C" block,
+"color.h" does but can be modified not to, so with that changed they can
+be moved out.
+---
+ src/3rdparty/autotrace/autotrace.h | 6 +++---
+ src/3rdparty/autotrace/color.h     | 7 +++++++
+ 2 files changed, 10 insertions(+), 3 deletions(-)
+
+diff --git a/src/3rdparty/autotrace/autotrace.h b/src/3rdparty/autotrace/autotrace.h
+index 2ce6f272a9..e56be9a74c 100644
+--- a/src/3rdparty/autotrace/autotrace.h
++++ b/src/3rdparty/autotrace/autotrace.h
+@@ -23,6 +23,9 @@
+ 
+ #include <stdio.h>
+ 
++#include "types.h"
++#include "color.h"
++
+ #ifdef __cplusplus
+ extern "C" {
+ #endif                          /* __cplusplus */
+@@ -35,9 +38,6 @@ extern "C" {
+  * Typedefs
+  * ===================================================================== */
+ 
+-#include "types.h"
+-#include "color.h"
+-
+ /* Third degree is the highest we deal with.  */
+   enum _at_polynomial_degree {
+     AT_LINEARTYPE = 1,
+diff --git a/src/3rdparty/autotrace/color.h b/src/3rdparty/autotrace/color.h
+index e50ab30ae0..88651db9f7 100644
+--- a/src/3rdparty/autotrace/color.h
++++ b/src/3rdparty/autotrace/color.h
+@@ -24,6 +24,10 @@
+ #include <glib.h>
+ #include <glib-object.h>
+ 
++#ifdef __cplusplus
++extern "C" {
++#endif                          /* __cplusplus */
++
+ typedef struct _at_color at_color;
+ struct _at_color {
+   guint8 r;
+@@ -43,4 +47,7 @@ void at_color_free(at_color * color);
+ GType at_color_get_type(void);
+ #define AT_TYPE_COLOR (at_color_get_type ())
+ 
++#ifdef __cplusplus
++}
++#endif                          /* __cplusplus */
+ #endif /* not AT_COLOR_H */
+-- 
+GitLab
+
diff --git a/inkscape.changes b/inkscape.changes
index f8f15d5..11f44fb 100644
--- a/inkscape.changes
+++ b/inkscape.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Mar 26 08:27:20 UTC 2021 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- Add 2790.patch: fix build against glib 2.67.3.
+
 -------------------------------------------------------------------
 Mon Jan 25 12:43:45 UTC 2021 - Paolo Stivanin <info@paolostivanin.com>
 
diff --git a/inkscape.spec b/inkscape.spec
index 43d5fa9..087e1ba 100644
--- a/inkscape.spec
+++ b/inkscape.spec
@@ -27,6 +27,8 @@ Source:         https://media.inkscape.org/dl/resources/file/%{name}-%{version}.
 # openSUSE palette file
 Source1:        openSUSE.gpl
 Source2:        inkscape-split-extensions-extra.py
+# PATCH-FIX-UPSTREAM 2790.patch dimstar@opensuse.org -- Fix build against glib 2.67.3
+Patch0:         https://gitlab.com/inkscape/inkscape/-/merge_requests/2790.patch
 BuildRequires:  cmake
 BuildRequires:  double-conversion-devel
 BuildRequires:  fdupes
@@ -130,7 +132,7 @@ Inkscape is a vector graphics editor.
 %lang_package
 
 %prep
-%setup -q -n %{name}-%{_version}
+%autosetup -n %{name}-%{_version} -p1
 
 %build
 %ifarch %{arm}