diff --git a/.github/workflows/wheels-dependencies.sh b/.github/workflows/wheels-dependencies.sh
index c17bb7765be..6dadeb775d6 100755
--- a/.github/workflows/wheels-dependencies.sh
+++ b/.github/workflows/wheels-dependencies.sh
@@ -103,7 +103,7 @@ XZ_VERSION=5.8.2
 ZSTD_VERSION=1.5.7
 TIFF_VERSION=4.7.1
 LCMS2_VERSION=2.18
-ZLIB_NG_VERSION=2.3.2
+ZLIB_NG_VERSION=2.3.3
 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 b9bfc0c6e17..e62a94cc40b 100644
--- a/winbuild/build_prepare.py
+++ b/winbuild/build_prepare.py
@@ -126,7 +126,7 @@ def cmd_msbuild(
     "OPENJPEG": "2.5.4",
     "TIFF": "4.7.1",
     "XZ": "5.8.2",
-    "ZLIBNG": "2.3.2",
+    "ZLIBNG": "2.3.3",
 }
 V["LIBPNG_XY"] = "".join(V["LIBPNG"].split(".")[:2])