diff --git a/deployment/check/basic/nixosTest.nix b/deployment/check/basic/nixosTest.nix
index bcdf9f6d..b49be6c3 100644
--- a/deployment/check/basic/nixosTest.nix
+++ b/deployment/check/basic/nixosTest.nix
@@ -91,6 +91,8 @@ testers.runNixOSTest (
                 pkgs.peertube.inputDerivation
                 pkgs.gixy
                 pkgs.gixy.inputDerivation
+
+                pkgs.postgresql_15
               ]
               ++ lib.concatLists (
                 map (tm: extraDependenciesFromMachine nodes.${tm}) (targetMachines ++ [ "fake" ])