diff --git a/crates/rrr_chart/Cargo.toml b/crates/rrr_chart/Cargo.toml
index 8e591bd..a4c69c5 100644
--- a/crates/rrr_chart/Cargo.toml
+++ b/crates/rrr_chart/Cargo.toml
@@ -24,7 +24,7 @@ rrr_types = { path = "../rrr_types" }
 serde = { version = "1.0.201", features = ["derive"] }
 strum = { version = "0.26.2", features = ["derive"] }
 swf = { version = "0.2", optional = true }
-thiserror = "1.0"
+thiserror = "2.0"
 
 
 [dev-dependencies]