diff --git a/pkgs/servers/sql/postgresql/ext/pgvecto-rs/package.nix b/pkgs/servers/sql/postgresql/ext/pgvecto-rs/package.nix
index 3f5be0b2e4a3..b78d948cd26b 100644
--- a/pkgs/servers/sql/postgresql/ext/pgvecto-rs/package.nix
+++ b/pkgs/servers/sql/postgresql/ext/pgvecto-rs/package.nix
@@ -5,7 +5,6 @@
   fetchFromGitHub,
   lib,
   nix-update-script,
-  nixosTests,
   openssl,
   pkg-config,
   postgresql,
diff --git a/pkgs/servers/sql/postgresql/ext/timescaledb.nix b/pkgs/servers/sql/postgresql/ext/timescaledb.nix
index 5997b18410bb..a440e069d687 100644
--- a/pkgs/servers/sql/postgresql/ext/timescaledb.nix
+++ b/pkgs/servers/sql/postgresql/ext/timescaledb.nix
@@ -3,7 +3,6 @@
   fetchFromGitHub,
   lib,
   libkrb5,
-  nixosTests,
   openssl,
   postgresql,
   postgresqlBuildExtension,
diff --git a/pkgs/servers/sql/postgresql/ext/timescaledb_toolkit.nix b/pkgs/servers/sql/postgresql/ext/timescaledb_toolkit.nix
index 9954e1143d22..50ec99c21712 100644
--- a/pkgs/servers/sql/postgresql/ext/timescaledb_toolkit.nix
+++ b/pkgs/servers/sql/postgresql/ext/timescaledb_toolkit.nix
@@ -4,7 +4,6 @@
   fetchFromGitHub,
   lib,
   nix-update-script,
-  nixosTests,
   postgresql,
 }:
 
@@ -27,7 +26,7 @@
 
   passthru = {
     updateScript = nix-update-script { };
-    tests = nixosTests.postgresql.timescaledb.passthru.override postgresql;
+    tests = postgresql.pkgs.timescaledb.tests;
   };
 
   # tests take really long
diff --git a/pkgs/servers/sql/postgresql/ext/tsja.nix b/pkgs/servers/sql/postgresql/ext/tsja.nix
index f9ea021b76b2..1610f414f038 100644
--- a/pkgs/servers/sql/postgresql/ext/tsja.nix
+++ b/pkgs/servers/sql/postgresql/ext/tsja.nix
@@ -2,7 +2,6 @@
   fetchzip,
   lib,
   mecab,
-  nixosTests,
   postgresql,
   postgresqlTestExtension,
   stdenv,