diff --git a/pkgs/applications/networking/browsers/firefox-bin/default.nix b/pkgs/applications/networking/browsers/firefox-bin/default.nix
index b0cfe44bf131..e98668a2c983 100644
--- a/pkgs/applications/networking/browsers/firefox-bin/default.nix
+++ b/pkgs/applications/networking/browsers/firefox-bin/default.nix
@@ -32,6 +32,7 @@ let
   mozillaPlatforms = {
     i686-linux = "linux-i686";
     x86_64-linux = "linux-x86_64";
+    aarch64-linux = "linux-aarch64";
   };
 
   arch = mozillaPlatforms.${stdenv.hostPlatform.system};