diff --git a/modules/nixos/services/postgresql/default.nix b/modules/nixos/services/postgresql/default.nix
index 4eeb552..7f9c70c 100755
--- a/modules/nixos/services/postgresql/default.nix
+++ b/modules/nixos/services/postgresql/default.nix
@@ -5,6 +5,7 @@ let
     ;
   inherit (flake.config.services.instances)
     postgresql
+    firefly-iii
     ;
 
   service = postgresql;
@@ -23,6 +24,13 @@ in
     };
     postgresql = {
       enable = true;
+      ensureDatabases = [ firefly-iii.name ];
+      ensureUsers = [
+        {
+          name = "firefly-iii";
+          ensureDBOwnership = true;
+        }
+      ];
     };
   };
   networking = {