diff --git a/pkgs/applications/misc/electrum/ltc.nix b/pkgs/applications/misc/electrum/ltc.nix
index 2c6fb39fa433..7d6480b4696c 100644
--- a/pkgs/applications/misc/electrum/ltc.nix
+++ b/pkgs/applications/misc/electrum/ltc.nix
@@ -27,6 +27,8 @@ python3Packages.buildPythonApplication rec {
     dnspython
     jsonrpclib-pelix
     pysocks
+    trezor
+    btchip
   ];
 
   preBuild = ''