diff --git a/modules/nixos/services/matrix/default.nix b/modules/nixos/services/matrix/default.nix
index 52b60c5..87494c9 100644
--- a/modules/nixos/services/matrix/default.nix
+++ b/modules/nixos/services/matrix/default.nix
@@ -257,5 +257,9 @@ in
         config.services.matrix-synapse.dataDir
       ];
     };
+
+    my.system.persist.directories = [
+      config.services.matrix-synapse.dataDir
+    ];
   };
 }