diff --git a/firmware/protob/messages.options b/firmware/protob/messages.options
index 84f440c16..c93f18249 100644
--- a/firmware/protob/messages.options
+++ b/firmware/protob/messages.options
@@ -187,43 +187,43 @@ StellarPublicKey.public_key				max_size:32
 
 StellarSignTx.address_n					max_count:10
 StellarSignTx.network_passphrase			max_size:1024
-StellarSignTx.source_account				max_size:32
+StellarSignTx.source_account				max_size:57
 StellarSignTx.memo_text					max_size:29
 StellarSignTx.memo_hash					max_size:32
 
-StellarPaymentOp.source_account				max_size:32
-StellarPaymentOp.destination_account			max_size:32
+StellarPaymentOp.source_account				max_size:57
+StellarPaymentOp.destination_account			max_size:57
 
-StellarCreateAccountOp.source_account			max_size:32
-StellarCreateAccountOp.new_account			max_size:32
+StellarCreateAccountOp.source_account			max_size:57
+StellarCreateAccountOp.new_account			max_size:57
 
-StellarPathPaymentOp.source_account			max_size:32
-StellarPathPaymentOp.destination_account		max_size:32
+StellarPathPaymentOp.source_account			max_size:57
+StellarPathPaymentOp.destination_account		max_size:57
 StellarPathPaymentOp.paths				max_count:5
 
-StellarManageOfferOp.source_account			max_size:32
+StellarManageOfferOp.source_account			max_size:57
 
-StellarCreatePassiveOfferOp.source_account		max_size:32
+StellarCreatePassiveOfferOp.source_account		max_size:57
 
-StellarSetOptionsOp.source_account			max_size:32
-StellarSetOptionsOp.inflation_destination_account	max_size:32
+StellarSetOptionsOp.source_account			max_size:57
+StellarSetOptionsOp.inflation_destination_account	max_size:57
 StellarSetOptionsOp.home_domain				max_size:33
 StellarSetOptionsOp.signer_key				max_size:32
 
-StellarChangeTrustOp.source_account			max_size:32
+StellarChangeTrustOp.source_account			max_size:57
 
-StellarAllowTrustOp.source_account			max_size:32
-StellarAllowTrustOp.trusted_account			max_size:32
+StellarAllowTrustOp.source_account			max_size:57
+StellarAllowTrustOp.trusted_account			max_size:57
 StellarAllowTrustOp.asset_code				max_size:13
 
-StellarAccountMergeOp.source_account			max_size:32
-StellarAccountMergeOp.destination_account		max_size:32
+StellarAccountMergeOp.source_account			max_size:57
+StellarAccountMergeOp.destination_account		max_size:57
 
-StellarManageDataOp.source_account			max_size:32
+StellarManageDataOp.source_account			max_size:57
 StellarManageDataOp.key					max_size:65
 StellarManageDataOp.value				max_size:65
 
-StellarBumpSequenceOp.source_account			max_size:32
+StellarBumpSequenceOp.source_account			max_size:57
 
 StellarSignedTx.public_key				max_size:32
 StellarSignedTx.signature				max_size:64 # ed25519 signatures are 64 bytes, this does not include the hint
diff --git a/vendor/trezor-common b/vendor/trezor-common
index 0bf60dbda..e5df1abfb 160000
--- a/vendor/trezor-common
+++ b/vendor/trezor-common
@@ -1 +1 @@
-Subproject commit 0bf60dbda9bd85db01ed36e5d9045a223744a35c
+Subproject commit e5df1abfbe752da9232893715c496b3a1a9bde7a