diff --git a/pkgs/development/python-modules/ufomerge/default.nix b/pkgs/development/python-modules/ufomerge/default.nix
index ed03839cfa3e..f213db1f0825 100644
--- a/pkgs/development/python-modules/ufomerge/default.nix
+++ b/pkgs/development/python-modules/ufomerge/default.nix
@@ -13,14 +13,14 @@
 
 buildPythonPackage rec {
   pname = "ufomerge";
-  version = "1.8.3";
+  version = "1.9.1";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "googlefonts";
     repo = "ufomerge";
     tag = "v${version}";
-    hash = "sha256-E/RgFJXyA6/ZktsjydqDecysi03+XQDOD0SeH3rlFZI=";
+    hash = "sha256-Efpfmow9tfPcE9ri13CKfahBDjaiMK1NBUAbG8FhYlM=";
   };
 
   build-system = [