diff --git a/.github/workflows/wheels-dependencies.sh b/.github/workflows/wheels-dependencies.sh
index 410255b7eda..e01ad064aac 100755
--- a/.github/workflows/wheels-dependencies.sh
+++ b/.github/workflows/wheels-dependencies.sh
@@ -39,7 +39,7 @@ ARCHIVE_SDIR=pillow-depends-main
 # Package versions for fresh source builds
 FREETYPE_VERSION=2.13.3
 HARFBUZZ_VERSION=10.1.0
-LIBPNG_VERSION=1.6.45
+LIBPNG_VERSION=1.6.46
 JPEGTURBO_VERSION=3.1.0
 OPENJPEG_VERSION=2.5.3
 XZ_VERSION=5.6.3
diff --git a/winbuild/build_prepare.py b/winbuild/build_prepare.py
index b9695d1d802..8818c74024a 100644
--- a/winbuild/build_prepare.py
+++ b/winbuild/build_prepare.py
@@ -116,7 +116,7 @@ def cmd_msbuild(
     "HARFBUZZ": "10.1.0",
     "JPEGTURBO": "3.1.0",
     "LCMS2": "2.16",
-    "LIBPNG": "1.6.45",
+    "LIBPNG": "1.6.46",
     "LIBWEBP": "1.5.0",
     "OPENJPEG": "2.5.3",
     "TIFF": "4.6.0",