diff --git a/scripts/install.in b/scripts/install.in
index 4500fd54a..6709f00d4 100644
--- a/scripts/install.in
+++ b/scripts/install.in
@@ -36,6 +36,7 @@ tarball="$tmpDir/$(basename "$tmpDir/nix-@nixVersion@-$system.tar.xz")"
 
 require_util curl "download the binary tarball"
 require_util tar "unpack the binary tarball"
+require_util xz "unpack the binary tarball"
 
 echo "downloading Nix @nixVersion@ binary tarball for $system from '$url' to '$tmpDir'..."
 curl -L "$url" -o "$tarball" || oops "failed to download '$url'"