diff --git a/trezorlib/tests/device_tests/test_msg_signtx_zcash.py b/trezorlib/tests/device_tests/test_msg_signtx_zcash.py
index a78dc7fde..831f8ba33 100644
--- a/trezorlib/tests/device_tests/test_msg_signtx_zcash.py
+++ b/trezorlib/tests/device_tests/test_msg_signtx_zcash.py
@@ -81,7 +81,10 @@ class TestMsgSigntxZcash(TrezorTest):
             )
 
             details = proto.SignTx(
-                version=3, overwintered=True, version_group_id=0x3C48270
+                version=3,
+                overwintered=True,
+                version_group_id=0x3C48270,
+                branch_id=0x5ba81b19,
             )
             _, serialized_tx = btc.sign_tx(
                 self.client,
@@ -145,7 +148,10 @@ class TestMsgSigntxZcash(TrezorTest):
             )
 
             details = proto.SignTx(
-                version=4, overwintered=True, version_group_id=0x892F2085
+                version=4,
+                overwintered=True,
+                version_group_id=0x892F2085,
+                branch_id=0x76b809bb,
             )
             _, serialized_tx = btc.sign_tx(
                 self.client,
diff --git a/vendor/trezor-common b/vendor/trezor-common
index 495b35e21..4b41d2e63 160000
--- a/vendor/trezor-common
+++ b/vendor/trezor-common
@@ -1 +1 @@
-Subproject commit 495b35e212f48ea2ac9e356febd5a49c3ee5254b
+Subproject commit 4b41d2e63841517bf701618434c018acf4f1bca2