diff --git a/extra/libpng/build b/extra/libpng/build
index c50a4130..db62c5b2 100755
--- a/extra/libpng/build
+++ b/extra/libpng/build
@@ -1,6 +1,6 @@
 #!/bin/sh -e
 
-gzip -dc libpng-1.6.45-apng.patch.gz | patch -p1
+gzip -dc "libpng-$2-apng.patch.gz" | patch -p1
 
 ./configure \
     --prefix=/usr
diff --git a/extra/libpng/checksums b/extra/libpng/checksums
index e4844524..c938c9ba 100644
--- a/extra/libpng/checksums
+++ b/extra/libpng/checksums
@@ -1,2 +1,2 @@
-cebb114cc102d4a4208d43f1701ee32e2bd802990bfa24b90e0794f1f770fd3edd
-8a99c89b292b330758aa8b8c6ab15799bc9aaa1e3e4785d787d47b131de8e23a07
+36f4bbb48c70975116b00ab0cff577931b96f703b2774ac3b33131d00141943504
+443e9636faec76a0f3e78d1421fc7e4dd17d78f45d84638b7a30532287998fc1e4
diff --git a/extra/libpng/sources b/extra/libpng/sources
index fbf84cb2..f29e9520 100644
--- a/extra/libpng/sources
+++ b/extra/libpng/sources
@@ -1,2 +1,2 @@
-https://github.com/glennrp/libpng/archive/v1.6.45.tar.gz
-https://downloads.sourceforge.net/sourceforge/libpng-apng/libpng-1.6.45-apng.patch.gz
+https://github.com/glennrp/libpng/archive/v1.6.46.tar.gz
+https://downloads.sourceforge.net/sourceforge/libpng-apng/libpng-1.6.46-apng.patch.gz
diff --git a/extra/libpng/version b/extra/libpng/version
index 9b4e9087..101207ff 100644
--- a/extra/libpng/version
+++ b/extra/libpng/version
@@ -1 +1 @@
-1.6.45 1
+1.6.46 1