diff --git a/porthos/services.nix b/porthos/services.nix
index cda6d7c..19d6a34 100644
--- a/porthos/services.nix
+++ b/porthos/services.nix
@@ -6,6 +6,21 @@ in
 {
   # List services that you want to enable:
   my.services = {
+    # Backblaze B2 backup
+    backup = {
+      enable = true;
+      repository = "b2:porthos-backup";
+      # Backup every 6 hours
+      timerConfig = {
+        OnActiveSec = "6h";
+        OnUnitActiveSec = "6h";
+      };
+      # Insecure, I don't care.
+      passwordFile =
+        builtins.toFile "password.txt" my.secrets.backup.password;
+      credentialsFile =
+        builtins.toFile "creds.env" my.secrets.backup.credentials;
+    };
     # Gitea forge
     gitea.enable = true;
     # Meta-indexers
diff --git a/secrets/backup/credentials.env b/secrets/backup/credentials.env
new file mode 100644
index 0000000..5b75142
Binary files /dev/null and b/secrets/backup/credentials.env differ
diff --git a/secrets/backup/password.txt b/secrets/backup/password.txt
new file mode 100644
index 0000000..a8f640c
Binary files /dev/null and b/secrets/backup/password.txt differ
diff --git a/secrets/default.nix b/secrets/default.nix
index 7104fc0..da4c6ba 100644
Binary files a/secrets/default.nix and b/secrets/default.nix differ