diff --git a/m/tent/gitea.nix b/m/tent/gitea.nix
index 53c3b850..dfbe1229 100644
--- a/m/tent/gitea.nix
+++ b/m/tent/gitea.nix
@@ -55,7 +55,9 @@
     };
 
     script = ''
-      ${exe} dump --type ${cfg.dump.type} --file "gitea-dump-$(date +%a).${cfg.dump.type}"
+      name="gitea-dump-$(date +%a).${cfg.dump.type}"
+      ${exe} dump --type ${cfg.dump.type} --file - >"$name.tmp"
+      mv "$name.tmp" "$name"
     '';
   };