diff --git a/media-libs/libpng/libpng16-1.6.37.recipe b/media-libs/libpng/libpng16-1.6.37.recipe
index f96633513..9e12fa836 100644
--- a/media-libs/libpng/libpng16-1.6.37.recipe
+++ b/media-libs/libpng/libpng16-1.6.37.recipe
@@ -12,7 +12,7 @@ SOURCE_URI="https://downloads.sourceforge.net/libpng/libpng-$portVersion.tar.gz"
 CHECKSUM_SHA256="daeb2620d829575513e35fecc83f0d3791a620b9b93d800b763542ece9390fb4"
 SOURCE_DIR="libpng-$portVersion"
 
-ARCHITECTURES="x86_gcc2 x86 x86_64 arm ?ppc sparc m68k"
+ARCHITECTURES="x86_gcc2 x86 x86_64 arm ?ppc sparc m68k arm64 riscv64"
 SECONDARY_ARCHITECTURES="x86_gcc2 x86"
 
 # define libVersion as xy.z.0 when portVersion is x.y.z.