diff --git a/subversion-1.14.3-zlib-ng.patch b/subversion-1.14.3-zlib-ng.patch
new file mode 100644
index 0000000..1b1a78a
--- /dev/null
+++ b/subversion-1.14.3-zlib-ng.patch
@@ -0,0 +1,25 @@
+commit ca640b37f8a50b18d76970fd6554e05801b7e81b
+Author: Tomas Korbar <tkorbar@redhat.com>
+Date:   Fri Jan 12 14:39:26 2024 +0100
+
+    Fix tests with zlib-ng
+
+diff --git a/subversion/tests/cmdline/patch_tests.py b/subversion/tests/cmdline/patch_tests.py
+index f52f12e..5950170 100755
+--- a/subversion/tests/cmdline/patch_tests.py
++++ b/subversion/tests/cmdline/patch_tests.py
+@@ -5797,11 +5797,11 @@ def patch_binary_file(sbox):
+     'diff --git a/iota b/iota\n',
+     'GIT binary patch\n',
+     'literal 48\n',
+-    'zc$^E#$ShU>qLPeMg|y6^R0Z|S{E|d<JuZf(=9bpB_PpZ!+|-hc%)E52)STkf{{Wp*\n',
+-    'B5)uFa\n',
++    'zc$^E#$ShXKELJGVNL5J7%t=*H&&)4LRM+ETXlib0ZEMdf&d*IP$;ix0=Ss~fPW=x6\n',
++    'Dol+7K\n',
+     '\n',
+     'literal 25\n',
+-    'ec$^E#$ShU>qLPeMg|y6^R0Z|S{E|d<JuU!m{s;*G\n',
++    'gc$^E#$ShXKELJGVNL5J7%t=*H&&)4LRM+DI0B`;X2><{9\n',
+     '\n',
+     'Property changes on: iota\n',
+     '___________________________________________________________________\n',
diff --git a/subversion.spec b/subversion.spec
index 34c9f5f..a634bfc 100644
--- a/subversion.spec
+++ b/subversion.spec
@@ -60,7 +60,7 @@
 Summary: A Modern Concurrent Version Control System
 Name: subversion
 Version: 1.14.3
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: Apache-2.0
 URL: https://subversion.apache.org/
 Source0: https://downloads.apache.org/subversion/subversion-%{version}.tar.bz2
@@ -79,6 +79,8 @@ Patch5: subversion-1.8.5-swigplWall.patch
 Patch6: subversion-1.14.1-testnomagic.patch
 Patch7: subversion-ruby-c99.patch
 Patch8: subversion-1.14.2-modsyms.patch
+# https://bugzilla.redhat.com/show_bug.cgi?id=2255746
+Patch9: subversion-1.14.3-zlib-ng.patch
 BuildRequires: make
 BuildRequires: autoconf, libtool, texinfo, which, gcc, gcc-c++
 BuildRequires: swig >= 1.3.24, gettext
@@ -243,6 +245,7 @@ This package includes supplementary tools for use with Subversion.
 %patch -P6 -p1 -b .testnomagic
 %patch -P7 -p1
 %patch -P8 -p1 -b .modsyms
+%patch -P9 -p1 -b .zlib
 
 :
 : === Building:
@@ -584,6 +587,10 @@ make check-javahl
 %endif
 
 %changelog
+* Fri Jan 12 2024 Tomas Korbar <tkorbar@redhat.com> - 1.14.3-2
+- Fix testing of binary patch
+- Resolves: rhbz#2255746
+
 * Fri Jan 05 2024 Richard Lescak <rlescak@redhat.com> - 1.14.3-1
 - rebase to version 1.14.3 (#2256062)