diff --git a/go.mod b/go.mod
index 0f06045..dc88759 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,7 @@ module github.com/nspcc-dev/neofs-contract
 go 1.14
 
 require (
+	github.com/mr-tron/base58 v1.2.0
 	github.com/nspcc-dev/neo-go v0.97.2
 	github.com/stretchr/testify v1.7.0
 	go.uber.org/zap v1.18.1