diff --git a/sources b/sources
index 6696ff9..a8cb52b 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (zlib-ng-2.1.3.tar.gz) = cb987c0b20a11fca5361dce94e53dead7364e739a984545c38ad4bf0c7fedd83d5d62530d979eca2182da88d7507a9bec8d3f5abff41e92ab5a63ac61001502e
+SHA512 (zlib-ng-2.1.5.tar.gz) = 9212d87c63a2da4e5355a7a1c75380aeba40fbd0ea3d71d3784cb3eac94237f9bea2a1b7993a08f39d4197725c4c133087d3a9d213d3944aa48a7559de2be920
diff --git a/zlib-ng.spec b/zlib-ng.spec
index 59e3269..a8f0433 100644
--- a/zlib-ng.spec
+++ b/zlib-ng.spec
@@ -10,7 +10,7 @@
 %global compat_soname libz.so.1
 
 # Compatible with the following zlib version.
-%global zlib_ver 1.2.13
+%global zlib_ver 1.3.0
 # Obsoletes zlib versions less than.
 %global zlib_obsoletes 1.3
 
@@ -18,8 +18,8 @@
 %global supported_abi_test aarch64 ppc64le x86_64
 
 Name:		zlib-ng
-Version:	2.1.3
-Release:	7%{?dist}
+Version:	2.1.5
+Release:	1%{?dist}
 Summary:	Zlib replacement with optimizations
 License:	zlib
 Url:		https://github.com/zlib-ng/zlib-ng
@@ -194,6 +194,9 @@ CHOST=%{target_cpu}-%{vendor}-linux-gnu sh test/abicheck.sh --zlib-compat
 
 
 %changelog
+* Wed Dec 20 2023 Tulio Magno Quites Machado Filho <tuliom@redhat.com> - 2.1.5-1
+- Update to zlib-ng 2.1.5
+
 * Wed Oct 18 2023 Tulio Magno Quites Machado Filho <tuliom@redhat.com> - 2.1.3-7
 - Improve the patch that defines the FAR macro