diff --git a/swap/src/lib.rs b/swap/src/lib.rs
index 1d45a8df..b71d005f 100644
--- a/swap/src/lib.rs
+++ b/swap/src/lib.rs
@@ -9,7 +9,6 @@ pub mod bob;
 pub mod cli;
 pub mod monero;
 pub mod network;
-pub mod serde;
 pub mod state;
 pub mod storage;
 pub mod trace;
diff --git a/swap/src/serde.rs b/swap/src/serde.rs
deleted file mode 100644
index 754946bd..00000000
--- a/swap/src/serde.rs
+++ /dev/null
@@ -1,47 +0,0 @@
-pub mod peer_id {
-    use libp2p::PeerId;
-    use serde::{de::Error, Deserialize, Deserializer, Serializer};
-
-    pub fn serialize<S>(peer_id: &PeerId, serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: Serializer,
-    {
-        let string = peer_id.to_string();
-        serializer.serialize_str(&string)
-    }
-
-    #[allow(dead_code)]
-    pub fn deserialize<'de, D>(deserializer: D) -> Result<PeerId, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        let string = String::deserialize(deserializer)?;
-        let peer_id = string.parse().map_err(D::Error::custom)?;
-
-        Ok(peer_id)
-    }
-
-    #[cfg(test)]
-    mod tests {
-        use super::*;
-        use serde::Serialize;
-        use spectral::prelude::*;
-
-        #[derive(Serialize)]
-        struct SerializablePeerId(#[serde(with = "super")] PeerId);
-
-        #[test]
-        fn maker_id_serializes_as_expected() {
-            let peer_id = SerializablePeerId(
-                "QmfUfpC2frwFvcDzpspnfZitHt5wct6n4kpG5jzgRdsxkY"
-                    .parse()
-                    .unwrap(),
-            );
-
-            let got = serde_json::to_string(&peer_id).expect("failed to serialize peer id");
-
-            assert_that(&got)
-                .is_equal_to(r#""QmfUfpC2frwFvcDzpspnfZitHt5wct6n4kpG5jzgRdsxkY""#.to_string());
-        }
-    }
-}