diff --git a/pkgs/development/python-modules/fontmath/default.nix b/pkgs/development/python-modules/fontmath/default.nix
index d9516ceb88b4..c0e4bc85773d 100644
--- a/pkgs/development/python-modules/fontmath/default.nix
+++ b/pkgs/development/python-modules/fontmath/default.nix
@@ -5,12 +5,12 @@
 
 buildPythonPackage rec {
   pname = "fontMath";
-  version = "0.8.1";
+  version = "0.9.1";
   disabled = isPy27;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0m2z2wwbxwljfcrg8hx4xq538adzcjpc352yqbfw0czbgs5ixmrr";
+    sha256 = "1c5e76e135409f49b15809d0ce94dfd00850f893f86d4d6a336808dbbf292700";
     extension = "zip";
   };