diff --git a/modules/services/calibre-web/default.nix b/modules/services/calibre-web/default.nix
index e6ba10d..8f5b262 100644
--- a/modules/services/calibre-web/default.nix
+++ b/modules/services/calibre-web/default.nix
@@ -53,5 +53,10 @@ in
         cfg.libraryPath
       ];
     };
+
+    my.system.persist.directories = [
+      "/var/lib/${config.services.calibre-web.dataDir}"
+      cfg.libraryPath
+    ];
   };
 }