-Source0: http://downloads.sourceforge.net/libpng/%{realname}-%{version}.tar.xz
-# Source0-md5: 015e8e15db1eecde5f2eb9eb5b6e59e9
-Patch0: %{realname}-pngminus.patch
-Patch1: http://downloads.sourceforge.net/libpng-apng/%{realname}-%{version}-apng.patch.gz
-# Patch1-md5: f02073fd96816b184c79b297775e37dc
+Source0: https://downloads.sourceforge.net/libpng/%{realname}-%{version}.tar.xz
+# Source0-md5: 122e6b7837811698563083b352bc8ca2
+Patch0: https://downloads.sourceforge.net/libpng-apng/%{realname}-%{version}-apng.patch.gz
+# Patch0-md5: 831a5f302970a91a8168647366c2e0af
+Patch1: %{realname}-pngminus.patch