diff --git a/machines/matrix/configuration.nix b/machines/matrix/configuration.nix
index 000ee46..6c85717 100644
--- a/machines/matrix/configuration.nix
+++ b/machines/matrix/configuration.nix
@@ -80,6 +80,9 @@
     firewall = { };
   };
 
+  # Set postgresql version
+  services.postgresql.package = pkgs.postgresql_15;
+
   # Setup home manager
   home-manager.users.nathan = import ./home.nix;