diff --git a/zebra-network/src/constants.rs b/zebra-network/src/constants.rs
index 624efd50..8c23673e 100644
--- a/zebra-network/src/constants.rs
+++ b/zebra-network/src/constants.rs
@@ -2,6 +2,9 @@
 
 use crate::types::*;
 
+/// The User-Agent string provided by the node.
+pub const USER_AGENT: &'static str = "Zebra v2.0.0-alpha.0";
+
 /// The Zcash network protocol version used on mainnet.
 pub const CURRENT_VERSION: Version = Version(170_007);