diff --git a/pkgs/servers/sql/postgresql/ext/pg_ivm.nix b/pkgs/servers/sql/postgresql/ext/pg_ivm.nix
index 675eab8fee5c..c652d50dfe89 100644
--- a/pkgs/servers/sql/postgresql/ext/pg_ivm.nix
+++ b/pkgs/servers/sql/postgresql/ext/pg_ivm.nix
@@ -1,9 +1,9 @@
 {
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  postgresql,
   buildPostgresqlExtension,
+  fetchFromGitHub,
+  lib,
+  postgresql,
+  stdenv,
 }:
 
 buildPostgresqlExtension rec {
@@ -12,18 +12,18 @@ buildPostgresqlExtension rec {
 
   src = fetchFromGitHub {
     owner = "sraoss";
-    repo = pname;
-    rev = "v${version}";
+    repo = "pg_ivm";
+    tag = "v${version}";
     hash = "sha256-Qcie7sbXcMbQkMoFIYBfttmvlYooESdSk2DyebHKPlk=";
   };
 
-  meta = with lib; {
+  meta = {
     description = "Materialized views with IVM (Incremental View Maintenance) for PostgreSQL";
     homepage = "https://github.com/sraoss/pg_ivm";
     changelog = "https://github.com/sraoss/pg_ivm/releases/tag/v${version}";
-    maintainers = with maintainers; [ ivan ];
+    maintainers = with lib.maintainers; [ ivan ];
     platforms = postgresql.meta.platforms;
-    license = licenses.postgresql;
-    broken = versionOlder postgresql.version "13";
+    license = lib.licenses.postgresql;
+    broken = lib.versionOlder postgresql.version "13";
   };
 }