diff --git a/.github/workflows/wheels-dependencies.sh b/.github/workflows/wheels-dependencies.sh
index e033b69a9..07ea75a75 100755
--- a/.github/workflows/wheels-dependencies.sh
+++ b/.github/workflows/wheels-dependencies.sh
@@ -96,7 +96,7 @@ else
   FREETYPE_VERSION=2.14.1
 fi
 HARFBUZZ_VERSION=12.2.0
-LIBPNG_VERSION=1.6.50
+LIBPNG_VERSION=1.6.51
 JPEGTURBO_VERSION=3.1.2
 OPENJPEG_VERSION=2.5.4
 XZ_VERSION=5.8.1
diff --git a/winbuild/build_prepare.py b/winbuild/build_prepare.py
index 99421ebe2..cd2ef13c1 100644
--- a/winbuild/build_prepare.py
+++ b/winbuild/build_prepare.py
@@ -121,7 +121,7 @@ V = {
     "LCMS2": "2.17",
     "LIBAVIF": "1.3.0",
     "LIBIMAGEQUANT": "4.4.1",
-    "LIBPNG": "1.6.50",
+    "LIBPNG": "1.6.51",
     "LIBWEBP": "1.6.0",
     "OPENJPEG": "2.5.4",
     "TIFF": "4.7.1",