diff --git a/.github/workflows/wheels-dependencies.sh b/.github/workflows/wheels-dependencies.sh
index fb86b6c7d..920dd1cc6 100755
--- a/.github/workflows/wheels-dependencies.sh
+++ b/.github/workflows/wheels-dependencies.sh
@@ -102,7 +102,7 @@ XZ_VERSION=5.8.1
 TIFF_VERSION=4.7.0
 LCMS2_VERSION=2.17
 ZLIB_VERSION=1.3.1
-ZLIB_NG_VERSION=2.2.4
+ZLIB_NG_VERSION=2.2.5
 LIBWEBP_VERSION=1.6.0
 BZIP2_VERSION=1.0.8
 LIBXCB_VERSION=1.17.0
diff --git a/winbuild/build_prepare.py b/winbuild/build_prepare.py
index 5633519dd..86485868c 100644
--- a/winbuild/build_prepare.py
+++ b/winbuild/build_prepare.py
@@ -126,7 +126,7 @@ V = {
     "OPENJPEG": "2.5.3",
     "TIFF": "4.7.0",
     "XZ": "5.8.1",
-    "ZLIBNG": "2.2.4",
+    "ZLIBNG": "2.2.5",
 }
 V["LIBPNG_XY"] = "".join(V["LIBPNG"].split(".")[:2])