diff --git a/musl-cross.rb b/musl-cross.rb
index 6a68ba9..0ce3c17 100644
--- a/musl-cross.rb
+++ b/musl-cross.rb
@@ -4,7 +4,7 @@
 class MuslCross < Formula
   desc "Linux cross compilers based on musl libc"
   homepage "https://github.com/richfelker/musl-cross-make"
-  url "https://github.com/richfelker/musl-cross-make/archive/v0.9.9.tar.gz"
+  url "https://github.com/richfelker/musl-cross-make/archive/refs/tags/v0.9.9.tar.gz"
   sha256 "ff3e2188626e4e55eddcefef4ee0aa5a8ffb490e3124850589bcaf4dd60f5f04"
   revision 1
   head "https://github.com/richfelker/musl-cross-make.git"
@@ -163,5 +163,7 @@ def install
     system "#{bin}/mips64el-linux-musl-cc", (testpath/"hello.c") if build.with? "mips64el"
     system "#{bin}/powerpc-linux-musl-cc", (testpath/"hello.c") if build.with? "powerpc"
     system "#{bin}/powerpc-linux-muslsf-cc", (testpath/"hello.c") if build.with? "powerpc-sf"
+    system "#{bin}/powerpc64-linux-musl-cc", (testpath/"hello.c") if build.with? "powerpc64"
+    system "#{bin}/powerpc64le-linux-musl-cc", (testpath/"hello.c") if build.with? "powerpc64le"
   end
 end