diff --git a/pkgs/development/python-modules/fonttools/default.nix b/pkgs/development/python-modules/fonttools/default.nix
index d0ad132991f..9a654ea97d2 100644
--- a/pkgs/development/python-modules/fonttools/default.nix
+++ b/pkgs/development/python-modules/fonttools/default.nix
@@ -20,14 +20,14 @@
 
 buildPythonPackage rec {
   pname = "fonttools";
-  version = "4.20.0";
+  version = "4.21.1";
   disabled = pythonOlder "3.6";
 
   src = fetchFromGitHub {
     owner  = pname;
     repo   = pname;
     rev    = version;
-    sha256 = "0yj83vsjh23g7gkmq6svbgc898x3qgygkhvpcbpycvmpwxxqxh1v";
+    sha256 = "1x9qrg6ppqhm5214ymwvn0r34qdz8pqvyxd0sj7rkp06wa757z2i";
   };
 
   # all dependencies are optional, but