diff --git a/Cargo.toml b/Cargo.toml
index 56119a5..24f1b07 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ num_cpus = "1.16.0"
 parking_lot = "0.12.3"
 paste = "1.0.15"
 simple-mermaid = "0.2.0"
-thiserror = "1.0.63"
+thiserror = "2.0.18"
 # required with the `affinity` feature
 core_affinity = { version = "0.8.1", optional = true }
 # required with alternate outcome channel implementations that can be enabled with features