diff --git a/pkgs/development/python-modules/pyfaidx/default.nix b/pkgs/development/python-modules/pyfaidx/default.nix
index 317691066f47..a50c8accb858 100644
--- a/pkgs/development/python-modules/pyfaidx/default.nix
+++ b/pkgs/development/python-modules/pyfaidx/default.nix
@@ -6,11 +6,11 @@
 
 buildPythonPackage rec {
   pname = "pyfaidx";
-  version = "0.6.2";
+  version = "0.6.3.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "d1258f8d053cba0c90fe329254e8ec59eb28b535b48d9d06e8c7f1d74b8e4531";
+    sha256 = "93adf036a75e08dc9b1dcd59de6a4db2f65a48c603edabe2e499764b6535ed50";
   };
 
   propagatedBuildInputs = [ six ];