diff --git a/flake.lock b/flake.lock
index 06c507e7d..325e01fb8 100644
--- a/flake.lock
+++ b/flake.lock
@@ -19,16 +19,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1614309161,
-        "narHash": "sha256-93kRxDPyEW9QIpxU71kCaV1r+hgOgP6/aVgC7vvO8IU=",
+        "lastModified": 1622503062,
+        "narHash": "sha256-5QHhFydG1+ImYjeE7XLrPbCUZhWcSYrebXpYuY0XWz4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "0e499fde7af3c28d63e9b13636716b86c3162b93",
+        "rev": "3a2e0c36e79cecaf196cbea23e75e74710140ea4",
         "type": "github"
       },
       "original": {
         "id": "nixpkgs",
-        "ref": "nixos-20.09-small",
+        "ref": "nixos-21.05-small",
         "type": "indirect"
       }
     },
diff --git a/flake.nix b/flake.nix
index a445c7763..6c65e3406 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,7 +1,7 @@
 {
   description = "The purely functional package manager";
 
-  inputs.nixpkgs.url = "nixpkgs/nixos-20.09-small";
+  inputs.nixpkgs.url = "nixpkgs/nixos-21.05-small";
   inputs.lowdown-src = { url = "github:kristapsdz/lowdown/VERSION_0_8_4"; flake = false; };
 
   outputs = { self, nixpkgs, lowdown-src }:
@@ -286,8 +286,8 @@
 
           nativeBuildInputs = [ which ];
 
-          configurePhase =
-            ''
+          configurePhase = ''
+              ${if (stdenv.isDarwin && stdenv.isAarch64) then "echo \"HAVE_SANDBOX_INIT=false\" > configure.local" else ""}
               ./configure \
                 PREFIX=${placeholder "dev"} \
                 BINDIR=${placeholder "bin"}/bin
@@ -387,7 +387,7 @@
         # to https://nixos.org/nix/install. It downloads the binary
         # tarball for the user's system and calls the second half of the
         # installation script.
-        installerScript = installScriptFor [ "x86_64-linux" "i686-linux" "x86_64-darwin" "aarch64-linux" ];
+        installerScript = installScriptFor [ "x86_64-linux" "i686-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
         installerScriptForGHA = installScriptFor [ "x86_64-linux" "x86_64-darwin" ];
 
         # Line coverage analysis.
diff --git a/scripts/install.in b/scripts/install.in
index f660e3807..39016d161 100755
--- a/scripts/install.in
+++ b/scripts/install.in
@@ -46,15 +46,9 @@ case "$(uname -s).$(uname -m)" in
         system=x86_64-darwin
         ;;
     Darwin.arm64|Darwin.aarch64)
-        # check for Rosetta 2 support
-        if ! [ -f /Library/Apple/System/Library/LaunchDaemons/com.apple.oahd.plist ]; then
-          oops "Rosetta 2 is not installed on this ARM64 macOS machine. Run softwareupdate --install-rosetta then restart installation"
-        fi
-
-        hash=@tarballHash_x86_64-darwin@
-        path=@tarballPath_x86_64-darwin@
-        # eventually maybe: aarch64-darwin
-        system=x86_64-darwin
+        hash=@binaryTarball_aarch64-darwin@
+        path=@tarballPath_aarch64-darwin@
+        system=aarch64-darwin
         ;;
     *) oops "sorry, there is no binary distribution of Nix for your platform";;
 esac