diff --git a/pkgs/servers/sql/postgresql/ext/wal2json.nix b/pkgs/servers/sql/postgresql/ext/wal2json.nix
index 9562c738eb1f..2ec7d3c44e74 100644
--- a/pkgs/servers/sql/postgresql/ext/wal2json.nix
+++ b/pkgs/servers/sql/postgresql/ext/wal2json.nix
@@ -1,9 +1,9 @@
 {
-  lib,
-  fetchFromGitHub,
-  postgresql,
   buildPostgresqlExtension,
+  fetchFromGitHub,
+  lib,
   nixosTests,
+  postgresql,
 }:
 
 buildPostgresqlExtension rec {
@@ -15,20 +15,20 @@ buildPostgresqlExtension rec {
   src = fetchFromGitHub {
     owner = "eulerto";
     repo = "wal2json";
-    rev = "wal2json_2_6";
-    sha256 = "sha256-+QoACPCKiFfuT2lJfSUmgfzC5MXf75KpSoc2PzPxKyM=";
+    tag = "wal2json_2_6";
+    hash = "sha256-+QoACPCKiFfuT2lJfSUmgfzC5MXf75KpSoc2PzPxKyM=";
   };
 
   makeFlags = [ "USE_PGXS=1" ];
 
   passthru.tests = nixosTests.postgresql.wal2json.passthru.override postgresql;
 
-  meta = with lib; {
+  meta = {
     description = "PostgreSQL JSON output plugin for changeset extraction";
     homepage = "https://github.com/eulerto/wal2json";
     changelog = "https://github.com/eulerto/wal2json/releases/tag/${src.rev}";
-    maintainers = with maintainers; [ euank ];
+    maintainers = with lib.maintainers; [ euank ];
     platforms = postgresql.meta.platforms;
-    license = licenses.bsd3;
+    license = lib.licenses.bsd3;
   };
 }