diff --git a/doc/manual/src/contributing/hacking.md b/doc/manual/src/contributing/hacking.md
index 8577a6a2e..37c96a5c0 100644
--- a/doc/manual/src/contributing/hacking.md
+++ b/doc/manual/src/contributing/hacking.md
@@ -175,6 +175,7 @@ These are specified in `crossSystems` in `flake.nix`; feel free to submit change
 
 - `armv6l-linux`
 - `armv7l-linux`
+- `aarch64-linux`
 - `riscv64-linux`
 
 For example, to cross-compile Lix for `armv6l-linux` from another Linux, use the following:
diff --git a/flake.nix b/flake.nix
index d2eefca76..2b8c95f70 100644
--- a/flake.nix
+++ b/flake.nix
@@ -90,6 +90,7 @@
         "armv6l-linux"
         "armv7l-linux"
         "riscv64-linux"
+        "aarch64-linux"
         # FIXME: still broken in 24.05: fails to build rustc(??) due to missing -lstdc++ dep
         # "x86_64-freebsd"
         # FIXME: broken dev shell due to python