diff --git a/flake.nix b/flake.nix
index c56063f8c..99c9a584c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -164,6 +164,10 @@
           # Makefile target that boots the Tailscale appliance under qemu.
           mtools
           dtc
+
+          # awscli2 is used by gokrazy/build.go to import and register the
+          # Tailscale appliance AMI.
+          awscli2.out
         ];
       };
     });