diff --git a/hosts/parsons/configuration.nix b/hosts/parsons/configuration.nix
index e08d403..6d69648 100644
--- a/hosts/parsons/configuration.nix
+++ b/hosts/parsons/configuration.nix
@@ -79,7 +79,7 @@
 
   services.restic.backups.tardis = {
     passwordFile = "/persist/restic/system";
-    s3CredentialsFile = "/persist/restic/system.s3creds";
+    environmentFile = "/persist/restic/system.s3creds";
     paths = [
       "/home"
       "/persist"