diff --git a/modules/nixos/services/matrix/default.nix b/modules/nixos/services/matrix/default.nix
index b958f76..145139f 100644
--- a/modules/nixos/services/matrix/default.nix
+++ b/modules/nixos/services/matrix/default.nix
@@ -253,5 +253,9 @@ in
         config.services.matrix-synapse.dataDir
       ];
     };
+
+    my.system.persist.directories = [
+      config.services.matrix-synapse.dataDir
+    ];
   };
 }