diff --git a/.github/workflows/wheels-dependencies.sh b/.github/workflows/wheels-dependencies.sh
index d9a998fde..af7c134b5 100755
--- a/.github/workflows/wheels-dependencies.sh
+++ b/.github/workflows/wheels-dependencies.sh
@@ -48,7 +48,7 @@ OPENJPEG_VERSION=2.5.3
 XZ_VERSION=5.6.4
 TIFF_VERSION=4.6.0
 LCMS2_VERSION=2.16
-ZLIB_NG_VERSION=2.2.3  # patched
+ZLIB_NG_VERSION=2.2.4  # patched
 LIBWEBP_VERSION=1.5.0
 BZIP2_VERSION=1.0.8
 LIBXCB_VERSION=1.17.0
diff --git a/Tests/test_file_gif.py b/Tests/test_file_gif.py
index 46215db1f..396e09ba9 100644
--- a/Tests/test_file_gif.py
+++ b/Tests/test_file_gif.py
@@ -1345,7 +1345,7 @@ def test_save_I(tmp_path: Path) -> None:
         assert_image_equal(reloaded.convert("L"), im.convert("L"))
 
 
-def test_getdata() -> None:
+def test_getdata(monkeypatch: pytest.MonkeyPatch) -> None:
     # Test getheader/getdata against legacy values.
     # Create a 'P' image with holes in the palette.
     im = Image._wedge().resize((16, 16), Image.Resampling.NEAREST)
@@ -1354,23 +1354,21 @@ def test_getdata() -> None:
 
     passed_palette = bytes(255 - i // 3 for i in range(768))
 
-    GifImagePlugin._FORCE_OPTIMIZE = True
-    try:
-        h = GifImagePlugin.getheader(im, passed_palette)
-        d = GifImagePlugin.getdata(im)
+    monkeypatch.setattr(GifImagePlugin, "_FORCE_OPTIMIZE", True)
 
-        import pickle
+    h = GifImagePlugin.getheader(im, passed_palette)
+    d = GifImagePlugin.getdata(im)
 
-        # Enable to get target values on pre-refactor version
-        # with open('Tests/images/gif_header_data.pkl', 'wb') as f:
-        #    pickle.dump((h, d), f, 1)
-        with open("Tests/images/gif_header_data.pkl", "rb") as f:
-            (h_target, d_target) = pickle.load(f)
+    import pickle
 
-        assert h == h_target
-        assert d == d_target
-    finally:
-        GifImagePlugin._FORCE_OPTIMIZE = False
+    # Enable to get target values on pre-refactor version
+    # with open('Tests/images/gif_header_data.pkl', 'wb') as f:
+    #    pickle.dump((h, d), f, 1)
+    with open("Tests/images/gif_header_data.pkl", "rb") as f:
+        (h_target, d_target) = pickle.load(f)
+
+    assert h == h_target
+    assert d == d_target
 
 
 def test_lzw_bits() -> None:
diff --git a/patches/zlib-ng-2.2.3.tar.gz.patch b/patches/zlib-ng-2.2.4.tar.gz.patch
similarity index 100%
rename from patches/zlib-ng-2.2.3.tar.gz.patch
rename to patches/zlib-ng-2.2.4.tar.gz.patch
diff --git a/winbuild/build_prepare.py b/winbuild/build_prepare.py
index 54b5d983f..f942716cb 100644
--- a/winbuild/build_prepare.py
+++ b/winbuild/build_prepare.py
@@ -116,12 +116,13 @@ V = {
     "HARFBUZZ": "10.2.0",
     "JPEGTURBO": "3.1.0",
     "LCMS2": "2.16",
+    "LIBIMAGEQUANT": "4.3.4",
     "LIBPNG": "1.6.46",
     "LIBWEBP": "1.5.0",
     "OPENJPEG": "2.5.3",
     "TIFF": "4.6.0",
     "XZ": "5.6.4",
-    "ZLIBNG": "2.2.3",
+    "ZLIBNG": "2.2.4",
 }
 V["LIBPNG_XY"] = "".join(V["LIBPNG"].split(".")[:2])
 
@@ -335,24 +336,15 @@ DEPS: dict[str, dict[str, Any]] = {
         "libs": [r"bin\*.lib"],
     },
     "libimagequant": {
-        # commit: Merge branch 'master' into msvc (matches 2.17.0 tag)
-        "url": "https://github.com/ImageOptim/libimagequant/archive/e4c1334be0eff290af5e2b4155057c2953a313ab.zip",
-        "filename": "libimagequant-e4c1334be0eff290af5e2b4155057c2953a313ab.zip",
+        "url": "https://github.com/ImageOptim/libimagequant/archive/{V['LIBIMAGEQUANT']}.tar.gz",
+        "filename": f"libimagequant-{V['LIBIMAGEQUANT']}.tar.gz",
         "license": "COPYRIGHT",
-        "patch": {
-            "CMakeLists.txt": {
-                "if(OPENMP_FOUND)": "if(false)",
-                "install": "#install",
-                # libimagequant does not detect MSVC x86_arm64 cross-compiler correctly
-                "if(${{CMAKE_SYSTEM_PROCESSOR}} STREQUAL ARM64)": "if({architecture} STREQUAL ARM64)",  # noqa: E501
-            }
-        },
         "build": [
-            *cmds_cmake("imagequant_a"),
-            cmd_copy("imagequant_a.lib", "imagequant.lib"),
+            cmd_cd("imagequant-sys"),
+            "cargo build --release",
         ],
-        "headers": [r"*.h"],
-        "libs": [r"imagequant.lib"],
+        "headers": ["libimagequant.h"],
+        "libs": [r"..\target\release\imagequant_sys.lib"],
     },
     "harfbuzz": {
         "url": f"https://github.com/harfbuzz/harfbuzz/archive/{V['HARFBUZZ']}.zip",