diff --git a/modules/nixos/services/flood/default.nix b/modules/nixos/services/flood/default.nix
index f3fe90b..b129617 100644
--- a/modules/nixos/services/flood/default.nix
+++ b/modules/nixos/services/flood/default.nix
@@ -28,6 +28,10 @@ in
       };
     };
 
+    my.system.persist.directories = [
+      "/var/lib/flood"
+    ];
+
     # NOTE: unfortunately flood does not log connection failures for fail2ban
   };
 }