diff --git a/pkgs/servers/sql/postgresql/15.nix b/pkgs/servers/sql/postgresql/15.nix
index 63f4928401ac..8d484a97ec1c 100644
--- a/pkgs/servers/sql/postgresql/15.nix
+++ b/pkgs/servers/sql/postgresql/15.nix
@@ -1,4 +1,4 @@
 import ./generic.nix {
-  version = "15.8";
-  hash = "sha256-RANRX5pp7rPv68mPMLjGlhIr/fiV6Ss7I/W452nty2o=";
+  version = "15.9";
+  hash = "sha256-dPLUVlA18M9ynssFmUn6rxECy9k3WbNZgi+Y+CGYx4M=";
 }
diff --git a/pkgs/servers/sql/postgresql/generic.nix b/pkgs/servers/sql/postgresql/generic.nix
index e2cfda935a7f..3ecf3e505728 100644
--- a/pkgs/servers/sql/postgresql/generic.nix
+++ b/pkgs/servers/sql/postgresql/generic.nix
@@ -119,13 +119,6 @@ let
         src = ./patches/locale-binary-path.patch;
         locale = "${if stdenv.isDarwin then darwin.adv_cmds else lib.getBin stdenv.cc.libc}/bin/locale";
       })
-    ] ++ lib.optionals (atLeast "15" && olderThan "16") [
-      # TODO: Remove this with the next set of minor releases
-      (fetchpatch ({
-          url = "https://github.com/postgres/postgres/commit/b27622c90869aab63cfe22159a459c57768b0fa4.patch";
-          hash = "sha256-7G+BkJULhyx6nlMEjClcr2PJg6awgymZHr2JgGhXanA=";
-          excludes = [ "doc/*" ];
-        }))
     ] ++ lib.optionals stdenv'.hostPlatform.isMusl (
       # Using fetchurl instead of fetchpatch on purpose: https://github.com/NixOS/nixpkgs/issues/240141
       map fetchurl (lib.attrValues muslPatches)