diff --git a/Tests/test_file_pdf.py b/Tests/test_file_pdf.py
index 310619fb2..df0b7abe6 100644
--- a/Tests/test_file_pdf.py
+++ b/Tests/test_file_pdf.py
@@ -37,6 +37,7 @@ def helper_save_as_pdf(tmp_path, mode, **kwargs):
     return outfile
 
 
+@pytest.mark.valgrind_known_error(reason="Temporary skip")
 def test_monochrome(tmp_path):
     # Arrange
     mode = "1"
diff --git a/Tests/test_image_paste.py b/Tests/test_image_paste.py
index 4ea1d73ce..1ab02017d 100644
--- a/Tests/test_image_paste.py
+++ b/Tests/test_image_paste.py
@@ -1,3 +1,5 @@
+import pytest
+
 from PIL import Image
 
 from .helper import CachedProperty, assert_image_equal
@@ -101,226 +103,226 @@ class TestImagingPaste:
             ],
         )
 
-    def test_image_solid(self):
-        for mode in ("RGBA", "RGB", "L"):
-            im = Image.new(mode, (200, 200), "red")
-            im2 = getattr(self, "gradient_" + mode)
+    @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
+    def test_image_solid(self, mode):
+        im = Image.new(mode, (200, 200), "red")
+        im2 = getattr(self, "gradient_" + mode)
 
-            im.paste(im2, (12, 23))
+        im.paste(im2, (12, 23))
 
-            im = im.crop((12, 23, im2.width + 12, im2.height + 23))
-            assert_image_equal(im, im2)
+        im = im.crop((12, 23, im2.width + 12, im2.height + 23))
+        assert_image_equal(im, im2)
 
-    def test_image_mask_1(self):
-        for mode in ("RGBA", "RGB", "L"):
-            im = Image.new(mode, (200, 200), "white")
-            im2 = getattr(self, "gradient_" + mode)
+    @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
+    def test_image_mask_1(self, mode):
+        im = Image.new(mode, (200, 200), "white")
+        im2 = getattr(self, "gradient_" + mode)
 
-            self.assert_9points_paste(
-                im,
-                im2,
-                self.mask_1,
-                [
-                    (255, 255, 255, 255),
-                    (255, 255, 255, 255),
-                    (127, 254, 127, 0),
-                    (255, 255, 255, 255),
-                    (255, 255, 255, 255),
-                    (191, 190, 63, 64),
-                    (127, 0, 127, 254),
-                    (191, 64, 63, 190),
-                    (255, 255, 255, 255),
-                ],
-            )
+        self.assert_9points_paste(
+            im,
+            im2,
+            self.mask_1,
+            [
+                (255, 255, 255, 255),
+                (255, 255, 255, 255),
+                (127, 254, 127, 0),
+                (255, 255, 255, 255),
+                (255, 255, 255, 255),
+                (191, 190, 63, 64),
+                (127, 0, 127, 254),
+                (191, 64, 63, 190),
+                (255, 255, 255, 255),
+            ],
+        )
 
-    def test_image_mask_L(self):
-        for mode in ("RGBA", "RGB", "L"):
-            im = Image.new(mode, (200, 200), "white")
-            im2 = getattr(self, "gradient_" + mode)
+    @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
+    def test_image_mask_L(self, mode):
+        im = Image.new(mode, (200, 200), "white")
+        im2 = getattr(self, "gradient_" + mode)
 
-            self.assert_9points_paste(
-                im,
-                im2,
-                self.mask_L,
-                [
-                    (128, 191, 255, 191),
-                    (208, 239, 239, 208),
-                    (255, 255, 255, 255),
-                    (112, 111, 206, 207),
-                    (192, 191, 191, 191),
-                    (239, 239, 207, 207),
-                    (128, 1, 128, 254),
-                    (207, 113, 112, 207),
-                    (255, 191, 128, 191),
-                ],
-            )
+        self.assert_9points_paste(
+            im,
+            im2,
+            self.mask_L,
+            [
+                (128, 191, 255, 191),
+                (208, 239, 239, 208),
+                (255, 255, 255, 255),
+                (112, 111, 206, 207),
+                (192, 191, 191, 191),
+                (239, 239, 207, 207),
+                (128, 1, 128, 254),
+                (207, 113, 112, 207),
+                (255, 191, 128, 191),
+            ],
+        )
 
-    def test_image_mask_LA(self):
-        for mode in ("RGBA", "RGB", "L"):
-            im = Image.new(mode, (200, 200), "white")
-            im2 = getattr(self, "gradient_" + mode)
+    @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
+    def test_image_mask_LA(self, mode):
+        im = Image.new(mode, (200, 200), "white")
+        im2 = getattr(self, "gradient_" + mode)
 
-            self.assert_9points_paste(
-                im,
-                im2,
-                self.gradient_LA,
-                [
-                    (128, 191, 255, 191),
-                    (112, 207, 206, 111),
-                    (128, 254, 128, 1),
-                    (208, 208, 239, 239),
-                    (192, 191, 191, 191),
-                    (207, 207, 112, 113),
-                    (255, 255, 255, 255),
-                    (239, 207, 207, 239),
-                    (255, 191, 128, 191),
-                ],
-            )
+        self.assert_9points_paste(
+            im,
+            im2,
+            self.gradient_LA,
+            [
+                (128, 191, 255, 191),
+                (112, 207, 206, 111),
+                (128, 254, 128, 1),
+                (208, 208, 239, 239),
+                (192, 191, 191, 191),
+                (207, 207, 112, 113),
+                (255, 255, 255, 255),
+                (239, 207, 207, 239),
+                (255, 191, 128, 191),
+            ],
+        )
 
-    def test_image_mask_RGBA(self):
-        for mode in ("RGBA", "RGB", "L"):
-            im = Image.new(mode, (200, 200), "white")
-            im2 = getattr(self, "gradient_" + mode)
+    @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
+    def test_image_mask_RGBA(self, mode):
+        im = Image.new(mode, (200, 200), "white")
+        im2 = getattr(self, "gradient_" + mode)
 
-            self.assert_9points_paste(
-                im,
-                im2,
-                self.gradient_RGBA,
-                [
-                    (128, 191, 255, 191),
-                    (208, 239, 239, 208),
-                    (255, 255, 255, 255),
-                    (112, 111, 206, 207),
-                    (192, 191, 191, 191),
-                    (239, 239, 207, 207),
-                    (128, 1, 128, 254),
-                    (207, 113, 112, 207),
-                    (255, 191, 128, 191),
-                ],
-            )
+        self.assert_9points_paste(
+            im,
+            im2,
+            self.gradient_RGBA,
+            [
+                (128, 191, 255, 191),
+                (208, 239, 239, 208),
+                (255, 255, 255, 255),
+                (112, 111, 206, 207),
+                (192, 191, 191, 191),
+                (239, 239, 207, 207),
+                (128, 1, 128, 254),
+                (207, 113, 112, 207),
+                (255, 191, 128, 191),
+            ],
+        )
 
-    def test_image_mask_RGBa(self):
-        for mode in ("RGBA", "RGB", "L"):
-            im = Image.new(mode, (200, 200), "white")
-            im2 = getattr(self, "gradient_" + mode)
+    @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
+    def test_image_mask_RGBa(self, mode):
+        im = Image.new(mode, (200, 200), "white")
+        im2 = getattr(self, "gradient_" + mode)
 
-            self.assert_9points_paste(
-                im,
-                im2,
-                self.gradient_RGBa,
-                [
-                    (128, 255, 126, 255),
-                    (0, 127, 126, 255),
-                    (126, 253, 126, 255),
-                    (128, 127, 254, 255),
-                    (0, 255, 254, 255),
-                    (126, 125, 254, 255),
-                    (128, 1, 128, 255),
-                    (0, 129, 128, 255),
-                    (126, 255, 128, 255),
-                ],
-            )
+        self.assert_9points_paste(
+            im,
+            im2,
+            self.gradient_RGBa,
+            [
+                (128, 255, 126, 255),
+                (0, 127, 126, 255),
+                (126, 253, 126, 255),
+                (128, 127, 254, 255),
+                (0, 255, 254, 255),
+                (126, 125, 254, 255),
+                (128, 1, 128, 255),
+                (0, 129, 128, 255),
+                (126, 255, 128, 255),
+            ],
+        )
 
-    def test_color_solid(self):
-        for mode in ("RGBA", "RGB", "L"):
-            im = Image.new(mode, (200, 200), "black")
+    @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
+    def test_color_solid(self, mode):
+        im = Image.new(mode, (200, 200), "black")
 
-            rect = (12, 23, 128 + 12, 128 + 23)
-            im.paste("white", rect)
+        rect = (12, 23, 128 + 12, 128 + 23)
+        im.paste("white", rect)
 
-            hist = im.crop(rect).histogram()
-            while hist:
-                head, hist = hist[:256], hist[256:]
-                assert head[255] == 128 * 128
-                assert sum(head[:255]) == 0
+        hist = im.crop(rect).histogram()
+        while hist:
+            head, hist = hist[:256], hist[256:]
+            assert head[255] == 128 * 128
+            assert sum(head[:255]) == 0
 
-    def test_color_mask_1(self):
-        for mode in ("RGBA", "RGB", "L"):
-            im = Image.new(mode, (200, 200), (50, 60, 70, 80)[: len(mode)])
-            color = (10, 20, 30, 40)[: len(mode)]
+    @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
+    def test_color_mask_1(self, mode):
+        im = Image.new(mode, (200, 200), (50, 60, 70, 80)[: len(mode)])
+        color = (10, 20, 30, 40)[: len(mode)]
 
-            self.assert_9points_paste(
-                im,
-                color,
-                self.mask_1,
-                [
-                    (50, 60, 70, 80),
-                    (50, 60, 70, 80),
-                    (10, 20, 30, 40),
-                    (50, 60, 70, 80),
-                    (50, 60, 70, 80),
-                    (10, 20, 30, 40),
-                    (10, 20, 30, 40),
-                    (10, 20, 30, 40),
-                    (50, 60, 70, 80),
-                ],
-            )
+        self.assert_9points_paste(
+            im,
+            color,
+            self.mask_1,
+            [
+                (50, 60, 70, 80),
+                (50, 60, 70, 80),
+                (10, 20, 30, 40),
+                (50, 60, 70, 80),
+                (50, 60, 70, 80),
+                (10, 20, 30, 40),
+                (10, 20, 30, 40),
+                (10, 20, 30, 40),
+                (50, 60, 70, 80),
+            ],
+        )
 
-    def test_color_mask_L(self):
-        for mode in ("RGBA", "RGB", "L"):
-            im = getattr(self, "gradient_" + mode).copy()
-            color = "white"
+    @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
+    def test_color_mask_L(self, mode):
+        im = getattr(self, "gradient_" + mode).copy()
+        color = "white"
 
-            self.assert_9points_paste(
-                im,
-                color,
-                self.mask_L,
-                [
-                    (127, 191, 254, 191),
-                    (111, 207, 206, 110),
-                    (127, 254, 127, 0),
-                    (207, 207, 239, 239),
-                    (191, 191, 190, 191),
-                    (207, 206, 111, 112),
-                    (254, 254, 254, 255),
-                    (239, 206, 206, 238),
-                    (254, 191, 127, 191),
-                ],
-            )
+        self.assert_9points_paste(
+            im,
+            color,
+            self.mask_L,
+            [
+                (127, 191, 254, 191),
+                (111, 207, 206, 110),
+                (127, 254, 127, 0),
+                (207, 207, 239, 239),
+                (191, 191, 190, 191),
+                (207, 206, 111, 112),
+                (254, 254, 254, 255),
+                (239, 206, 206, 238),
+                (254, 191, 127, 191),
+            ],
+        )
 
-    def test_color_mask_RGBA(self):
-        for mode in ("RGBA", "RGB", "L"):
-            im = getattr(self, "gradient_" + mode).copy()
-            color = "white"
+    @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
+    def test_color_mask_RGBA(self, mode):
+        im = getattr(self, "gradient_" + mode).copy()
+        color = "white"
 
-            self.assert_9points_paste(
-                im,
-                color,
-                self.gradient_RGBA,
-                [
-                    (127, 191, 254, 191),
-                    (111, 207, 206, 110),
-                    (127, 254, 127, 0),
-                    (207, 207, 239, 239),
-                    (191, 191, 190, 191),
-                    (207, 206, 111, 112),
-                    (254, 254, 254, 255),
-                    (239, 206, 206, 238),
-                    (254, 191, 127, 191),
-                ],
-            )
+        self.assert_9points_paste(
+            im,
+            color,
+            self.gradient_RGBA,
+            [
+                (127, 191, 254, 191),
+                (111, 207, 206, 110),
+                (127, 254, 127, 0),
+                (207, 207, 239, 239),
+                (191, 191, 190, 191),
+                (207, 206, 111, 112),
+                (254, 254, 254, 255),
+                (239, 206, 206, 238),
+                (254, 191, 127, 191),
+            ],
+        )
 
-    def test_color_mask_RGBa(self):
-        for mode in ("RGBA", "RGB", "L"):
-            im = getattr(self, "gradient_" + mode).copy()
-            color = "white"
+    @pytest.mark.parametrize("mode", ["RGBA", "RGB", "L"])
+    def test_color_mask_RGBa(self, mode):
+        im = getattr(self, "gradient_" + mode).copy()
+        color = "white"
 
-            self.assert_9points_paste(
-                im,
-                color,
-                self.gradient_RGBa,
-                [
-                    (255, 63, 126, 63),
-                    (47, 143, 142, 46),
-                    (126, 253, 126, 255),
-                    (15, 15, 47, 47),
-                    (63, 63, 62, 63),
-                    (142, 141, 46, 47),
-                    (255, 255, 255, 0),
-                    (48, 15, 15, 47),
-                    (126, 63, 255, 63),
-                ],
-            )
+        self.assert_9points_paste(
+            im,
+            color,
+            self.gradient_RGBa,
+            [
+                (255, 63, 126, 63),
+                (47, 143, 142, 46),
+                (126, 253, 126, 255),
+                (15, 15, 47, 47),
+                (63, 63, 62, 63),
+                (142, 141, 46, 47),
+                (255, 255, 255, 0),
+                (48, 15, 15, 47),
+                (126, 63, 255, 63),
+            ],
+        )
 
     def test_different_sizes(self):
         im = Image.new("RGB", (100, 100))
diff --git a/depends/install_imagequant.sh b/depends/install_imagequant.sh
index 9b3088b94..76f4cb95f 100755
--- a/depends/install_imagequant.sh
+++ b/depends/install_imagequant.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # install libimagequant
 
-archive=libimagequant-4.0.1
+archive=libimagequant-4.0.2
 
 ./download-and-extract.sh $archive https://raw.githubusercontent.com/python-pillow/pillow-depends/main/$archive.tar.gz
 
diff --git a/docs/installation.rst b/docs/installation.rst
index 42cd7df9d..a8cd5e441 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -166,7 +166,7 @@ Many of Pillow's features require external libraries:
 
 * **libimagequant** provides improved color quantization
 
-  * Pillow has been tested with libimagequant **2.6-4.0.1**
+  * Pillow has been tested with libimagequant **2.6-4.0.2**
   * Libimagequant is licensed GPLv3, which is more restrictive than
     the Pillow license, therefore we will not be distributing binaries
     with libimagequant support enabled.
diff --git a/winbuild/build_prepare.py b/winbuild/build_prepare.py
index a381d636d..94e5dd871 100644
--- a/winbuild/build_prepare.py
+++ b/winbuild/build_prepare.py
@@ -226,21 +226,21 @@ deps = {
         "filename": "lcms2-2.13.1.tar.gz",
         "dir": "lcms2-2.13.1",
         "patch": {
-            r"Projects\VC2019\lcms2_static\lcms2_static.vcxproj": {
+            r"Projects\VC2022\lcms2_static\lcms2_static.vcxproj": {
                 # default is /MD for x86 and /MT for x64, we need /MD always
                 "<RuntimeLibrary>MultiThreaded</RuntimeLibrary>": "<RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>",  # noqa: E501
                 # retarget to default toolset (selected by vcvarsall.bat)
-                "<PlatformToolset>v142</PlatformToolset>": "<PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>",  # noqa: E501
+                "<PlatformToolset>v143</PlatformToolset>": "<PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>",  # noqa: E501
                 # retarget to latest (selected by vcvarsall.bat)
                 "<WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>": "<WindowsTargetPlatformVersion>$(WindowsSDKVersion)</WindowsTargetPlatformVersion>",  # noqa: E501
             }
         },
         "build": [
             cmd_rmdir("Lib"),
-            cmd_rmdir(r"Projects\VC2019\Release"),
-            cmd_msbuild(r"Projects\VC2019\lcms2.sln", "Release", "Clean"),
+            cmd_rmdir(r"Projects\VC2022\Release"),
+            cmd_msbuild(r"Projects\VC2022\lcms2.sln", "Release", "Clean"),
             cmd_msbuild(
-                r"Projects\VC2019\lcms2.sln", "Release", "lcms2_static:Rebuild"
+                r"Projects\VC2022\lcms2.sln", "Release", "lcms2_static:Rebuild"
             ),
             cmd_xcopy("include", "{inc_dir}"),
         ],