diff --git a/0001-Add-memory-include-required-for-unique_ptr.patch b/0001-Add-memory-include-required-for-unique_ptr.patch
new file mode 100644
index 0000000..a2163ec
--- /dev/null
+++ b/0001-Add-memory-include-required-for-unique_ptr.patch
@@ -0,0 +1,28 @@
+From 0cbe77ac110d3335cafdd85196780e02d02753db Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Stefan=20Br=C3=BCns?= <stefan.bruens@rwth-aachen.de>
+Date: Sat, 21 May 2022 12:37:06 +0200
+Subject: [PATCH] Add <memory> include required for unique_ptr
+
+Do no rely on <memory> to be included by some other header file.
+Fixes build failures with GCC 12.1.0.
+
+Fixes #583.
+---
+ include/minizinc/utils.hh | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/include/minizinc/utils.hh b/include/minizinc/utils.hh
+index 209869cb..0deedaed 100644
+--- a/include/minizinc/utils.hh
++++ b/include/minizinc/utils.hh
+@@ -21,6 +21,7 @@
+ #include <iomanip>
+ #include <iostream>
+ #include <limits>
++#include <memory>
+ #include <ratio>
+ #include <sstream>
+ #include <string>
+-- 
+2.36.0
+
diff --git a/libminizinc-2.6.2.tar.gz b/libminizinc-2.6.2.tar.gz
deleted file mode 100644
index 279141c..0000000
--- a/libminizinc-2.6.2.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:0893bb0d37336fdc75c5f8864135e1abc571af422df9fbd41432776cedd3ebbc
-size 12965958
diff --git a/libminizinc-2.6.3.tar.gz b/libminizinc-2.6.3.tar.gz
new file mode 100644
index 0000000..2043375
--- /dev/null
+++ b/libminizinc-2.6.3.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:740884d4eb8e7acf366efaad82efa0ca46dc4342afa5a6ecc1d749fcc4f96dd4
+size 12967548
diff --git a/libminizinc.changes b/libminizinc.changes
index 9814ef5..0eb0cd9 100644
--- a/libminizinc.changes
+++ b/libminizinc.changes
@@ -1,3 +1,17 @@
+-------------------------------------------------------------------
+Sat May 21 10:47:50 UTC 2022 - Stefan Brüns <stefan.bruens@rwth-aachen.de>
+
+- Update to version 2.6.3
+  https://github.com/MiniZinc/libminizinc/blob/2.6.3/changes.rst
+- Fix build with GCC 12.1.0, add
+  0001-Add-memory-include-required-for-unique_ptr.patch
+
+-------------------------------------------------------------------
+Thu Apr 28 12:47:40 UTC 2022 - Stefan Brüns <stefan.bruens@rwth-aachen.de>
+
+- Depend on gecode for building the presolver, and recommend the
+  gecode-minizinc solver plugin.
+
 -------------------------------------------------------------------
 Tue Apr 26 20:51:53 UTC 2022 - Stefan Brüns <stefan.bruens@rwth-aachen.de>
 
diff --git a/libminizinc.spec b/libminizinc.spec
index 7458e00..e2a0c76 100644
--- a/libminizinc.spec
+++ b/libminizinc.spec
@@ -17,24 +17,28 @@
 
 
 Name:           libminizinc
-Version:        2.6.2
+Version:        2.6.3
 Release:        0
-Summary:	A high-level constraint modelling language
+Summary:        A high-level constraint modelling language
 Group:          Productivity/Scientific/Math
 License:        MPL-2.0
 URL:            https://www.minizinc.org/
 Source:         https://github.com/MiniZinc/libminizinc/archive/refs/tags/%{version}.tar.gz#/%{name}-%{version}.tar.gz
 # PATCH-FIX-UPSTREAM
 Patch0:         0001-Fix-missing-return-in-non-void-function.patch
+# PATCH-FIX-UPSTREAM
+Patch1:         0001-Add-memory-include-required-for-unique_ptr.patch
 BuildRequires:  cmake >= 3.4.0
 BuildRequires:  gcc-c++
 BuildRequires:  pkgconfig(mpfr)
+BuildRequires:  gecode-devel
+Recommends:     gecode-minizinc
 
 %description
 MiniZinc is a free and open-source constraint modeling language.
 
 %package -n minizinc
-Summary:	A high-level constraint modelling language
+Summary:        A high-level constraint modelling language
 
 %description -n minizinc
 You can use MiniZinc to model constraint satisfaction and optimisation
@@ -44,7 +48,7 @@ compiled into FlatZinc, a solver input language that is understood
 by a wide range of solvers.
 
 %package devel
-Summary:	A high-level constraint modelling language
+Summary:        A high-level constraint modelling language
 Group:          Development/Libraries/C and C++
 Requires:       minizinc = %{version}