diff -Nru gnucash-4.4/debian/changelog gnucash-4.4/debian/changelog
--- gnucash-4.4/debian/changelog	2021-01-06 09:07:35.000000000 +0000
+++ gnucash-4.4/debian/changelog	2021-04-13 16:49:54.000000000 +0000
@@ -1,3 +1,9 @@
+gnucash (1:4.4-1ubuntu1) UNRELEASED; urgency=medium
+
+  * Fix build with new glib 
+
+ -- Heather Ellsworth <heather.ellsworth@canonical.com>  Tue, 13 Apr 2021 16:49:54 +0000
+
 gnucash (1:4.4-1) unstable; urgency=medium
 
   * New upstream release.
diff -Nru gnucash-4.4/debian/patches/fix-build-with-new-glib gnucash-4.4/debian/patches/fix-build-with-new-glib
--- gnucash-4.4/debian/patches/fix-build-with-new-glib	1970-01-01 00:00:00.000000000 +0000
+++ gnucash-4.4/debian/patches/fix-build-with-new-glib	2021-04-13 16:49:54.000000000 +0000
@@ -0,0 +1,42 @@
+ Fix build with new glib
+ Remove the extern "C" to fix the build with a glib newer than 2.66.
+ See https://gitlab.gnome.org/GNOME/glib/-/issues/2331 for more info.
+.
+ gnucash (1:4.4-1ubuntu1) UNRELEASED; urgency=medium
+ .
+   * Fix build with new glib
+Author: Heather Ellsworth <heather.ellsworth@canonical.com>
+
+---
+
+--- gnucash-4.4.orig/libgnucash/core-utils/gnc-filepath-utils.cpp
++++ gnucash-4.4/libgnucash/core-utils/gnc-filepath-utils.cpp
+@@ -26,7 +26,6 @@
+  * @author Copyright (c) 2000 Dave Peticolas
+  */
+ 
+-extern "C" {
+ #include <config.h>
+ 
+ #include <platform.h>
+@@ -62,7 +61,6 @@ extern "C" {
+ #ifdef MAC_INTEGRATION
+ #include <Foundation/Foundation.h>
+ #endif
+-}
+ 
+ #include "gnc-locale-utils.hpp"
+ #include <boost/filesystem.hpp>
+--- gnucash-4.4.orig/libgnucash/core-utils/gnc-locale-utils.cpp
++++ gnucash-4.4/libgnucash/core-utils/gnc-locale-utils.cpp
+@@ -19,10 +19,7 @@
+  * 51 Franklin Street, Fifth Floor    Fax:    +1-617-542-2652       *
+  * Boston, MA  02110-1301,  USA       gnu@gnu.org                   *
+ \********************************************************************/
+-extern "C"
+-{
+ #include <glib.h>
+-}
+ #include <clocale>
+ #include <boost/locale.hpp>
+ #include "gnc-locale-utils.hpp"
diff -Nru gnucash-4.4/debian/patches/series gnucash-4.4/debian/patches/series
--- gnucash-4.4/debian/patches/series	2020-10-03 05:09:42.000000000 +0000
+++ gnucash-4.4/debian/patches/series	2021-04-13 16:49:54.000000000 +0000
@@ -2,3 +2,4 @@
 build-flags.patch
 
 #t-skip--python-bindings.patch
+fix-build-with-new-glib