diff --git a/dynare-add-missing-include.patch b/dynare-add-missing-include.patch
new file mode 100644
index 0000000..2dea556
--- /dev/null
+++ b/dynare-add-missing-include.patch
@@ -0,0 +1,12 @@
+Index: dynare-5.3/preprocessor/src/CodeInterpreter.hh
+===================================================================
+--- dynare-5.3.orig/preprocessor/src/CodeInterpreter.hh
++++ dynare-5.3/preprocessor/src/CodeInterpreter.hh
+@@ -22,6 +22,7 @@
+ 
+ #include <fstream>
+ #include <cstring>
++#include <cstdint>
+ #include <utility>
+ #include <vector>
+ #ifdef BYTE_CODE
diff --git a/dynare.changes b/dynare.changes
index ab38dca..08a8c40 100644
--- a/dynare.changes
+++ b/dynare.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Apr 10 20:53:33 UTC 2023 - Bjørn Lie <bjorn.lie@gmail.com>
+
+- Add dynare-add-missing-include.patch: Add missing includes, now
+  exposed by gcc 13.
+
 -------------------------------------------------------------------
 Fri Dec 30 10:21:23 UTC 2022 - Stefan Brüns <stefan.bruens@rwth-aachen.de>
 
diff --git a/dynare.spec b/dynare.spec
index 2176ed8..609dab2 100644
--- a/dynare.spec
+++ b/dynare.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package dynare
 #
-# Copyright (c) 2022 SUSE LLC
+# Copyright (c) 2023 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -34,6 +34,8 @@ URL:            https://www.dynare.org/
 Source:         https://www.dynare.org/release/source/%{name}-%{version}.tar.xz
 # PATCH-FIX-UPSTREAM dynare-no-return-in-non-void-function.patch badshah400@gmail.com -- Return trivial value from a function that is not declared as returning void
 Patch0:         dynare-no-return-in-non-void-function.patch
+# PATCH-FIX-UPSTREAM dynare-add-missing-include.patch -- Add missing includes, gcc 13 exposed
+Patch1:         dynare-add-missing-include.patch
 BuildRequires:  fdupes
 BuildRequires:  gcc%{gccver}-c++
 BuildRequires:  gcc%{gccver}-fortran
@@ -79,8 +81,7 @@ Summary:        Documentation for dynare in HTML format
 This package provides documentation for %{name} in HTML format.
 
 %prep
-%setup -q
-%patch0 -p1
+%autosetup -p1
 
 %build
 autoreconf -fvi