diff --git a/Cargo.toml b/Cargo.toml
index 8ef06d5..8a50783 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ features = ["nightly"]
 reddsa = "0.5.0"
 rand_core = "0.6"
 serde = { version = "1", optional = true, features = ["derive"] }
-thiserror = "1.0"
+thiserror = "2.0"
 zeroize = { version = "1", default-features = false, features = ["zeroize_derive"] }
 
 [dev-dependencies]