diff --git a/flake.nix b/flake.nix
index 96d9459..7fefcfd 100644
--- a/flake.nix
+++ b/flake.nix
@@ -94,6 +94,7 @@
         packages = with pkgs; [
           pkg-config
           openssl
+          postgresql_18
 
           taplo
           (rustfmt.override {asNightly = true;})