diff --git a/Justfile b/Justfile
index 341e1fa..04089d0 100644
--- a/Justfile
+++ b/Justfile
@@ -25,6 +25,26 @@ deployRemoteOs host:
   --target-host root@{{host}} \
   --verbose --log-format internal-json |& nom --json
 
+[group('nixos')]
+deployAll:
+  #!/usr/bin/env fish
+  set -l systems (nix flake show --all-systems --json \
+    | jq '.nixosConfigurations | keys[]' \
+      # Remove literal quotes from values so that contains works.
+    | string trim --chars \"\'\")
+
+  # Remove the current system.
+  set -l currentSysI (contains --index (hostname) $systems)
+  if set -q currentSysI[1]
+    set -e systems[$currentSysI]
+  end
+
+  just deployos
+
+  for system in $systems
+    just deployRemoteOs $system
+  end
+
 alias dd := deploydarwin
 [group('darwin')]
 deploydarwin host=defhost: