diff --git a/Cargo.toml b/Cargo.toml
index 7744ec5..995f169 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ categories = ["cryptography"]
 publish = true
 
 [workspace.dependencies]
-thiserror = "=2.0.20"
+thiserror = "=2.0.21"
 minicbor = { version = "=2.3.0", features = ["std"] }
 hpke = { version = "=0.14.1", default-features = false, features = ["alloc", "chacha", "x25519", "mlkem"] }
 chacha20poly1305 = { version = "=0.11.0", default-features = false, features = ["alloc", "zeroize"] }