diff --git a/pkgs/applications/office/gnucash/default.nix b/pkgs/applications/office/gnucash/default.nix
index 959aa30c037..d2251da7007 100644
--- a/pkgs/applications/office/gnucash/default.nix
+++ b/pkgs/applications/office/gnucash/default.nix
@@ -1,4 +1,4 @@
-{ fetchurl, lib, stdenv, pkg-config, makeWrapper, cmake, gtest
+{ fetchurl, fetchpatch, lib, stdenv, pkg-config, makeWrapper, cmake, gtest
 , boost, icu, libxml2, libxslt, gettext, swig, isocodes, gtk3, glibcLocales
 , webkitgtk, dconf, hicolor-icon-theme, libofx, aqbanking, gwenhywfar, libdbi
 , libdbiDrivers, guile, perl, perlPackages
@@ -25,13 +25,21 @@ in
 
 stdenv.mkDerivation rec {
   pname = "gnucash";
-  version = "4.4";
+  version = "4.5";
 
   src = fetchurl {
     url = "mirror://sourceforge/gnucash/${pname}-${version}.tar.bz2";
-    sha256 = "sha256-2R4NEmtGHXHeG8GyDZzxQnBDU97AfT5lmdE4QidZ5no=";
+    sha256 = "sha256-vB9IqEU0iKLp9rg7aGE6pVyuvk0pg0YL2sfghLRs/9w=";
   };
 
+  patches = [
+    # Fix build with GLib 2.68.
+    (fetchpatch {
+      url = "https://github.com/Gnucash/gnucash/commit/bbb4113a5a996dcd7bb3494e0be900b275b49a4f.patch";
+      sha256 = "Pnvwoq5zutFw7ByduEEANiLM2J50WiXpm2aZ8B2MDMQ=";
+    })
+  ];
+
   nativeBuildInputs = [ pkg-config makeWrapper cmake gtest ];
 
   buildInputs = [