diff --git a/side-node/Cargo.toml b/side-node/Cargo.toml
index e92005b..8378589 100644
--- a/side-node/Cargo.toml
+++ b/side-node/Cargo.toml
@@ -9,6 +9,7 @@ edition = "2021"
 clap = { version = "4.5.4", features = ["derive"] }
 tokio = { version = "1.37.0", features = ["time"] }
 websockets = "0.3.0"
+base64 = "0.21.7"
 bft-json-crdt = { path = "../crates/bft-json-crdt" }
 bft-crdt-derive = { path = "../crates/bft-json-crdt/bft-crdt-derive" }
 # serde_cbor = "0.11.2" # move to this once we need to pack things in CBOR