diff --git a/pkgs/development/python-modules/ecpy/default.nix b/pkgs/development/python-modules/ecpy/default.nix
index 97f04828300b..5338a963cfb6 100644
--- a/pkgs/development/python-modules/ecpy/default.nix
+++ b/pkgs/development/python-modules/ecpy/default.nix
@@ -4,13 +4,13 @@
 
 buildPythonPackage rec {
   pname = "ECPy";
-  version = "0.9.0";
+  version = "0.9.1";
 
   disabled = !isPy3k;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "ef41346ae24789699f3bc3ddefbfac03ad6b73b7d3d19b998ba9ce47b67c7277";
+    sha256 = "f0df66be67f3de0152dfb3c453f4247bdfa2b4e37aa75b98617a637376032229";
   };
 
   buildInputs = [ hidapi pycrypto pillow protobuf future ];