diff --git a/archivers/zlib-ng/Makefile b/archivers/zlib-ng/Makefile
index d143b4558d15..1cace675d747 100644
--- a/archivers/zlib-ng/Makefile
+++ b/archivers/zlib-ng/Makefile
@@ -1,31 +1,28 @@
 PORTNAME=	zlib-ng
-DISTVERSION=	2.2.4
+DISTVERSION=	2.2.5
 CATEGORIES=	archivers
 
 MAINTAINER=	vvd@FreeBSD.org
 COMMENT=	Fork of the zlib data compression library
 WWW=		https://github.com/zlib-ng/zlib-ng/
 
 LICENSE=	ZLIB
 LICENSE_FILE=	${WRKSRC}/LICENSE.md
 
 TEST_DEPENDS=	googletest>=0:devel/googletest
 
 USES=		cmake:testing compiler:c11
 USE_GITHUB=	yes
 USE_LDCONFIG=	yes
 
-CMAKE_OFF=		ZLIB_ENABLE_TESTS ZLIBNG_ENABLE_TESTS
-CMAKE_TESTING_ON=	ZLIB_ENABLE_TESTS ZLIBNG_ENABLE_TESTS
-
-# error: use of undeclared identifier 'isascii'
-CFLAGS+=	-D__XSI_VISIBLE
+CMAKE_OFF=		WITH_GTEST ZLIB_ENABLE_TESTS ZLIBNG_ENABLE_TESTS
+CMAKE_TESTING_ON=	WITH_GTEST ZLIB_ENABLE_TESTS ZLIBNG_ENABLE_TESTS
 
 PLIST_SUB=	SHLIB_VER=${DISTVERSION}
 
 OPTIONS_DEFINE=		SIMD
 OPTIONS_DEFAULT=	SIMD
 
 SIMD_CMAKE_BOOL=	WITH_OPTIM
 
 .include <bsd.port.mk>
diff --git a/archivers/zlib-ng/distinfo b/archivers/zlib-ng/distinfo
index abac4ac19a38..2f4754a7d3e9 100644
--- a/archivers/zlib-ng/distinfo
+++ b/archivers/zlib-ng/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1739270273
-SHA256 (zlib-ng-zlib-ng-2.2.4_GH0.tar.gz) = a73343c3093e5cdc50d9377997c3815b878fd110bf6511c2c7759f2afb90f5a3
-SIZE (zlib-ng-zlib-ng-2.2.4_GH0.tar.gz) = 2415754
+TIMESTAMP = 1756000000
+SHA256 (zlib-ng-zlib-ng-2.2.5_GH0.tar.gz) = 5b3b022489f3ced82384f06db1e13ba148cbce38c7941e424d6cb414416acd18
+SIZE (zlib-ng-zlib-ng-2.2.5_GH0.tar.gz) = 2417402