diff --git a/Cargo.toml b/Cargo.toml
index 9eca72d..5eb52fa 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -66,7 +66,7 @@ base64 = "0.22.1"
 hex = "0.4.3"
 
 # Error handling
-thiserror = "1.0.69"
+thiserror = "2.0.18"
 
 # Serialization (optional)
 serde = { version = "1.0.228", features = ["derive"], optional = true }