diff --git a/Cargo.lock b/Cargo.lock
index 0926927..a7496d1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1189,7 +1189,7 @@ dependencies = [
  "relaykit-protocol",
  "relaykit-tunnel",
  "serde",
- "thiserror 1.0.69",
+ "thiserror 2.0.18",
  "tokio",
  "tokio-tungstenite",
  "tracing",
@@ -1228,7 +1228,7 @@ version = "0.1.0"
 dependencies = [
  "serde",
  "serde_json",
- "thiserror 1.0.69",
+ "thiserror 2.0.18",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 0de4d97..0eff7b2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,7 +26,7 @@ ring = "0.17"
 rustls = { version = "0.23", default-features = false, features = ["ring", "std", "tls12"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-thiserror = "1"
+thiserror = "2"
 tokio = { version = "1", features = ["fs", "io-util", "macros", "net", "rt-multi-thread", "signal", "sync", "time"] }
 tokio-rustls = { version = "0.26", default-features = false, features = ["ring", "tls12"] }
 tokio-tungstenite = { version = "0.24", features = ["rustls-tls-webpki-roots"] }