diff --git a/pkgs/development/python-modules/trezor/default.nix b/pkgs/development/python-modules/trezor/default.nix
index 3015e8d7ebb9..137d67124458 100644
--- a/pkgs/development/python-modules/trezor/default.nix
+++ b/pkgs/development/python-modules/trezor/default.nix
@@ -24,13 +24,13 @@
 
 buildPythonPackage rec {
   pname = "trezor";
-  version = "0.12.3";
+  version = "0.12.4";
 
   disabled = !isPy3k;
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "02c39c333435b8f6dc62cc79bb5bf35fc7f0eb144a1a748be3b7c065ee3e85ae";
+    sha256 = "3e180d9f9f8b69176b5ef36311b6161f5b793b538eb2dfd4babbb4d3fb1e374e";
   };
 
   nativeBuildInputs = [ installShellFiles ];