diff --git a/pkgs/development/compilers/mlton/20210117-binary.nix b/pkgs/development/compilers/mlton/20210117-binary.nix
index 60bd31f0fda8..810974e61ac4 100644
--- a/pkgs/development/compilers/mlton/20210117-binary.nix
+++ b/pkgs/development/compilers/mlton/20210117-binary.nix
@@ -17,6 +17,11 @@ stdenv.mkDerivation rec {
         url = "https://github.com/MLton/mlton/releases/download/on-${version}-release/${pname}-${version}-1.amd64-darwin-19.6.gmp-static.tgz";
         sha256 = "0xndr2awlxdqr81j6snl9zqjx8r6f5fy9x65j1w899kf2dh9zsjv";
       })
+    else if stdenv.hostPlatform.system == "aarch64-darwin" then
+      (fetchurl {
+        url = "https://projects.laas.fr/tina/software/mlton-${version}-1.arm64-darwin-21.6-gmp-static.tgz";
+        sha256 = "1s61ayk3yj2xw8ilqk3fhb03x5x1wcakkmbhhvcsfb2hdw2c932x";
+      })
     else
       throw "Architecture not supported";
 
diff --git a/pkgs/development/compilers/mlton/meta.nix b/pkgs/development/compilers/mlton/meta.nix
index 1e4c0aacfc3c..afb11847adb6 100644
--- a/pkgs/development/compilers/mlton/meta.nix
+++ b/pkgs/development/compilers/mlton/meta.nix
@@ -11,5 +11,5 @@
 
   homepage = "http://mlton.org/";
   license = "bsd";
-  platforms = [ "i686-linux" "x86_64-linux" "x86_64-darwin"];
+  platforms = [ "i686-linux" "x86_64-linux" "x86_64-darwin" "aarch64-darwin"];
 }