diff --git a/config.go b/config.go
index 71a54bf..c12aea7 100644
--- a/config.go
+++ b/config.go
@@ -37,7 +37,7 @@ type AppConfig struct {
 
 type NodeConfig struct {
 	ByronGenesis      ByronGenesisConfig `yaml:"byron"`
-	Binary            string             // TODO: make this configurable
+	Binary            string             `yaml:"binary"           envconfig:"CARDANO_NODE_BINARY"`
 	Network           string             `yaml:"network"          envconfig:"CARDANO_NETWORK"`
 	SocketPath        string             `yaml:"socketPath"       envconfig:"CARDANO_NODE_SOCKET_PATH"`
 	NetworkMagic      uint32             `yaml:"networkMagic"     envconfig:"CARDANO_NODE_NETWORK_MAGIC"`