From 1e1128d44308d31fef7d5372bafe89d9bd496eca Mon Sep 17 00:00:00 2001
From: Wolfgang Walther <walther@technowledgy.de>
Date: Fri, 14 Aug 2026 22:32:14 +0200
Subject: [PATCH] libpq: 18.4 -> 18.16

Release Notes:
https://www.postgresql.org/about/news/postgresql-186-1711-1615-1519-1424-and-19-beta-3-released-3365/

Note: 18.5 was not shipped due to a regression.
---
 pkgs/servers/sql/postgresql/libpq.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/servers/sql/postgresql/libpq.nix b/pkgs/servers/sql/postgresql/libpq.nix
index 5ea0c5113225..96c05fdf54c6 100644
--- a/pkgs/servers/sql/postgresql/libpq.nix
+++ b/pkgs/servers/sql/postgresql/libpq.nix
@@ -40,14 +40,14 @@
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "libpq";
-  version = "18.4";
+  version = "18.6";
 
   src = fetchFromGitHub {
     owner = "postgres";
     repo = "postgres";
     # rev, not tag, on purpose: see generic.nix.
-    rev = "refs/tags/REL_18_4";
-    hash = "sha256-Ac/Dqcj8vjcW3my5vsnKaMiQqTq/HPtUzckJ3SMyrfA=";
+    rev = "refs/tags/REL_18_6";
+    hash = "sha256-ySffxlG7jlNyzx++BmIN+WuaQ9TMAJt/qER9wIjd6B8=";
   };
 
   __structuredAttrs = true;