diff --git a/0001-Remove-undefined-import-method-BPC_DT_ALL-536.patch b/0001-Remove-undefined-import-method-BPC_DT_ALL-536.patch
new file mode 100644
index 0000000..e4457e3
--- /dev/null
+++ b/0001-Remove-undefined-import-method-BPC_DT_ALL-536.patch
@@ -0,0 +1,39 @@
+From e9370da546e97a4cd21836f4d978d80ef5379cb6 Mon Sep 17 00:00:00 2001
+From: Damian Wrobe <dwrobel@ertelnet.rybnik.pl>
+Date: Sat, 21 Mar 2026 10:41:04 +0100
+Subject: [PATCH] Remove undefined import method BPC_DT_ALL #536
+
+---
+ bin/BackupPC_nightly   | 2 +-
+ bin/BackupPC_rrdUpdate | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/bin/BackupPC_nightly b/bin/BackupPC_nightly
+index dc00eab..5857a7c 100755
+--- a/bin/BackupPC_nightly
++++ b/bin/BackupPC_nightly
+@@ -86,7 +86,7 @@ use strict;
+ no utf8;
+ 
+ use lib "__INSTALLDIR__/lib";
+-use BackupPC::Lib qw( :BPC_DT_ALL );
++use BackupPC::Lib;
+ use BackupPC::XS;
+ use BackupPC::DirOps;
+ use Getopt::Std;
+diff --git a/bin/BackupPC_rrdUpdate b/bin/BackupPC_rrdUpdate
+index ed99416..3c48f21 100755
+--- a/bin/BackupPC_rrdUpdate
++++ b/bin/BackupPC_rrdUpdate
+@@ -39,7 +39,7 @@ use strict;
+ no utf8;
+ 
+ use lib "__INSTALLDIR__/lib";
+-use BackupPC::Lib qw( :BPC_DT_ALL );
++use BackupPC::Lib;
+ use File::Path;
+ use Data::Dumper;
+ our(%Info);
+-- 
+2.49.0
+
diff --git a/BackupPC.spec b/BackupPC.spec
index e5cd229..776b47c 100644
--- a/BackupPC.spec
+++ b/BackupPC.spec
@@ -10,7 +10,7 @@
 
 Name:           BackupPC
 Version:        4.4.0
-Release:        22%{?dist}
+Release:        23%{?dist}
 Summary:        High-performance backup system
 
 # Automatically converted from old format: GPLv2+ - review is highly recommended.
@@ -30,6 +30,10 @@ Source8:        apache.users
 Patch0:         BackupPC-4.1.3-docfix.patch
 # Fixes https://bugzilla.redhat.com/show_bug.cgi?id=2091514
 Patch1:         https://github.com/backuppc/backuppc/commit/2c9270b9b849b2c86ae6301dd722c97757bc9256.patch
+# Fixes https://github.com/backuppc/backuppc/issues/536
+# See also: https://sourceforge.net/p/backuppc/mailman/backuppc-users/thread/78CC8638-454D-4487-9C9E-5B88DEC665E3%40icloud.com/#msg58851936
+# Remove for >=4.4.1
+Patch2:         0001-Remove-undefined-import-method-BPC_DT_ALL-536.patch
 
 BuildRequires:  gcc
 BuildRequires:  perl-generators
@@ -337,6 +341,9 @@ fi
 
 
 %changelog
+* Sat Mar 21 2026 Damian Wrobel <dwrobel@ertelnet.rybnik.pl> - 4.4.0-23
+- Add upstream patch to fix calling undefined import method
+
 * Fri Jan 16 2026 Fedora Release Engineering <releng@fedoraproject.org> - 4.4.0-22
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild