diff --git a/sys-libs/zlib/zlib-1.2.11.recipe b/sys-libs/zlib/zlib-1.2.11.recipe
index 963717732..e26629d06 100644
--- a/sys-libs/zlib/zlib-1.2.11.recipe
+++ b/sys-libs/zlib/zlib-1.2.11.recipe
@@ -17,7 +17,7 @@ SOURCE_URI="http://zlib.net/fossils/zlib-$portVersion.tar.gz"
 CHECKSUM_SHA256="c3e5e9fdd5004dcb542feda5ee4f0ff0744628baf8ed2dd5d66f8ca1197cb1a1"
 PATCHES="zlib-$portVersion.patchset"
 
-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"
 
 PROVIDES="