diff --git a/pkgs/development/compilers/swift/default.nix b/pkgs/development/compilers/swift/default.nix
index 3bc96288f837..233eb6647c09 100644
--- a/pkgs/development/compilers/swift/default.nix
+++ b/pkgs/development/compilers/swift/default.nix
@@ -287,6 +287,7 @@ stdenv.mkDerivation rec {
     # Swift doesn't support 32bit Linux, unknown on other platforms.
     platforms = platforms.linux;
     badPlatforms = platforms.i686;
+    broken = stdenv.isAarch64; # 2018-09-04, never built on Hydra
   };
 }