diff --git a/utf64/rust/Cargo.toml b/utf64/rust/Cargo.toml
index 2b83ac2..a7b772f 100644
--- a/utf64/rust/Cargo.toml
+++ b/utf64/rust/Cargo.toml
@@ -15,5 +15,5 @@ readme = "../README.md"
 serde_json = "1.0.107"
 
 [dependencies]
-thiserror = "1.0.49"
+thiserror = "2.0.7"