diff --git a/pkgs/development/python-modules/trezor/default.nix b/pkgs/development/python-modules/trezor/default.nix
index e16f4027ce54..37d1043f215d 100644
--- a/pkgs/development/python-modules/trezor/default.nix
+++ b/pkgs/development/python-modules/trezor/default.nix
@@ -17,13 +17,13 @@
 
 buildPythonPackage rec {
   pname = "trezor";
-  version = "0.12.0";
+  version = "0.12.1";
 
   disabled = !isPy3k;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0ycmpwjv5xp25993divjhaq5j766zgcy22xx39xfc1pcvldq5g7n";
+    sha256 = "1w19m9lws55k9sjhras47hpfpqwq1jm5vy135nj65yhkblygqg19";
   };
 
   nativeBuildInputs = [ installShellFiles ];