diff --git a/profiles/matrix.nix b/profiles/matrix.nix
index de5a222..ea05358 100644
--- a/profiles/matrix.nix
+++ b/profiles/matrix.nix
@@ -19,7 +19,7 @@
       enable = true; # Enable the synapse server
       settings = {
         enable_registration = true; # Toggle user registration
-        enable_registration_without_verification = true;
+        enable_registration_without_verification = false;
         extraConfig = ''
           enable_group_creation: true   # Allow users to create communities
         '';
@@ -147,6 +147,11 @@
     };
   };
 
+  services.postgresqlBackup = {
+    enable = true;
+    compression = "zstd";
+  };
+
   services.postgresqlBackup.databases = ["matrix-synapse"];
 
   security.acme = {