diff --git a/.gitignore b/.gitignore
index e5f3d57..3878ea9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,3 +25,4 @@
 /libpng-1.6.35.tar.gz
 /libpng-1.6.36.tar.gz
 /libpng-1.6.37.tar.gz
+/libpng-1.6.40.tar.gz
diff --git a/libpng-fix-arm-neon.patch b/libpng-fix-arm-neon.patch
index e424957..99b0629 100644
--- a/libpng-fix-arm-neon.patch
+++ b/libpng-fix-arm-neon.patch
@@ -1,8 +1,8 @@
 diff --git a/configure.ac b/configure.ac
-index 4fb0778..930bf50 100644
+index 6f7a6eca2..0fb88d82b 100644
 --- a/configure.ac
 +++ b/configure.ac
-@@ -283,17 +283,21 @@ AC_ARG_ENABLE([arm-neon],
+@@ -359,17 +360,21 @@ AC_ARG_ENABLE([arm-neon],
     [case "$enableval" in
        no|off)
           # disable the default enabling on __ARM_NEON__ systems:
@@ -10,7 +10,7 @@ index 4fb0778..930bf50 100644
           AC_DEFINE([PNG_ARM_NEON_OPT], [0],
                     [Disable ARM Neon optimizations])
           # Prevent inclusion of the assembler files below:
-          enable_arm_neon=no;;
+          enable_arm_neon=no ;;
        check)
 +         AC_DEFINE([PNG_ARM_NEON], [], [ARM NEON support])
           AC_DEFINE([PNG_ARM_NEON_CHECK_SUPPORTED], [],
diff --git a/libpng.spec b/libpng.spec
index 49eb49f..135f4be 100644
--- a/libpng.spec
+++ b/libpng.spec
@@ -3,8 +3,8 @@
 Summary:       A library of functions for manipulating PNG image format files
 Name:          libpng
 Epoch:         2
-Version:       1.6.37
-Release:       15%{?dist}
+Version:       1.6.40
+Release:       1%{?dist}
 License:       zlib
 URL:           http://www.libpng.org/pub/png/
 
@@ -104,6 +104,9 @@ make check
 %{_bindir}/pngfix
 
 %changelog
+* Wed Sep 20 2023 Tulio Magno Quites Machado Filho <tuliom@redhat.com> - 2:1.6.40-1
+- Update to libpng 1.6.40
+
 * Thu Jul 20 2023 Fedora Release Engineering <releng@fedoraproject.org> - 2:1.6.37-15
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild
 
diff --git a/sources b/sources
index 0b9c8fa..35a99f2 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (libpng-1.6.37.tar.gz) = ccb3705c23b2724e86d072e2ac8cfc380f41fadfd6977a248d588a8ad57b6abe0e4155e525243011f245e98d9b7afbe2e8cc7fd4ff7d82fcefb40c0f48f88918
+SHA512 (libpng-1.6.40.tar.gz) = 5f36a145c7d41f1c417d5f4e03be0155dae3499d72e67170acaad92c1af418c0bb6bc508e9b4b27ef4206bf0074cbf74978bade3bff28bc291867b8f8c2a38cf