diff -Nru regina-normal-7.3/debian/changelog regina-normal-7.3/debian/changelog
--- regina-normal-7.3/debian/changelog	2023-05-04 15:05:55.000000000 +0200
+++ regina-normal-7.3/debian/changelog	2023-09-06 07:26:19.000000000 +0200
@@ -1,3 +1,9 @@
+regina-normal (7.3-2.1) unstable; urgency=medium
+
+  * Fix FTBFS bug caused by upgrade to gcc-13 (Closes: #1037840) 
+
+ -- Jonathan Bergh <bergh.jonathan@gmail.com>  Wed, 06 Sep 2023 07:26:19 +0200
+
 regina-normal (7.3-2) unstable; urgency=low
 
   * Fixed a bug where Link::resolve() would not clear calculated properties,
diff -Nru regina-normal-7.3/debian/patches/10-include-cstdint.diff regina-normal-7.3/debian/patches/10-include-cstdint.diff
--- regina-normal-7.3/debian/patches/10-include-cstdint.diff	1970-01-01 01:00:00.000000000 +0100
+++ regina-normal-7.3/debian/patches/10-include-cstdint.diff	2023-09-06 07:26:19.000000000 +0200
@@ -0,0 +1,24 @@
+Index: regina-normal-7.3/engine/utilities/stringutils.h
+===================================================================
+--- regina-normal-7.3.orig/engine/utilities/stringutils.h	2023-09-06 07:28:00.238290521 +0200
++++ regina-normal-7.3/engine/utilities/stringutils.h	2023-09-06 07:28:42.923493989 +0200
+@@ -42,6 +42,7 @@
+ #include <string>
+ #include <vector>
+ #include "regina-core.h"
++#include <cstdint>
+ 
+ namespace regina {
+ 
+Index: regina-normal-7.3/engine/triangulation/facepair.h
+===================================================================
+--- regina-normal-7.3.orig/engine/triangulation/facepair.h	2023-03-17 04:43:37.000000000 +0100
++++ regina-normal-7.3/engine/triangulation/facepair.h	2023-09-06 17:40:12.250098661 +0200
+@@ -41,6 +41,7 @@
+ 
+ #include "regina-core.h"
+ #include <iostream>
++#include <cstdint>
+ 
+ namespace regina {
+ 
diff -Nru regina-normal-7.3/debian/patches/series regina-normal-7.3/debian/patches/series
--- regina-normal-7.3/debian/patches/series	2023-05-04 15:05:55.000000000 +0200
+++ regina-normal-7.3/debian/patches/series	2023-09-06 07:26:19.000000000 +0200
@@ -1,2 +1,3 @@
 link-resolve.diff
 memory-leak.diff
+10-include-cstdint.diff