diff --git a/modules/fonts.nix b/modules/fonts.nix
index d7b398f..822e7b3 100644
--- a/modules/fonts.nix
+++ b/modules/fonts.nix
@@ -1,4 +1,4 @@
-# SPDX-FileCopyrightText: 2020-2023 Simon Bruder <simon@sbruder.de>
+# SPDX-FileCopyrightText: 2020-2024 Simon Bruder <simon@sbruder.de>
 #
 # SPDX-License-Identifier: AGPL-3.0-or-later
 
@@ -9,15 +9,15 @@ let
       family = "Iosevka sbruder";
       spacing = "term";
       serifs = "sans";
-      no-cv-ss = false;
-      export-glyph-names = true;
+      noCvSs = false;
+      exportGlyphNames = true;
 
       variants = {
         inherits = "ss20";
 
         design = {
           capital-g = "toothless-rounded-serifless-hooked";
-          four = "closed";
+          four = "closed-serifless";
           six = "closed-contour";
           nine = "closed-contour";
           number-sign = "upright-tall";