diff --git a/nixos/queen/configuration.nix b/nixos/queen/configuration.nix
index b35dc90..cde9925 100644
--- a/nixos/queen/configuration.nix
+++ b/nixos/queen/configuration.nix
@@ -103,7 +103,7 @@
     noto-fonts-emoji
     oh-my-zsh
     onlyoffice-documentserver
-    postgresql_15
+    postgresPackage
     python3
     rsync
     rabbitmq-server
diff --git a/nixos/queen/postgres.nix b/nixos/queen/postgres.nix
index f234937..f85f7af 100644
--- a/nixos/queen/postgres.nix
+++ b/nixos/queen/postgres.nix
@@ -3,9 +3,11 @@
   pkgs,
   ...
 }: {
+  #Define postgres here so this is the only place to update its version
+  postgresPackage = pkgs.postgresql_15;
   services.postgresql = {
     # https://nixos.org/manual/nixos/stable/#module-postgresql
-    package = pkgs.postgresql_15;
+    package = postgresPackage;
     enable = true;
 
     # Ensure the database, user, and ownership is set