diff --git a/espr/Cargo.toml b/espr/Cargo.toml
index 719362145..39334f664 100644
--- a/espr/Cargo.toml
+++ b/espr/Cargo.toml
@@ -27,7 +27,7 @@ Inflector = "0.11.4"
 derive_more = "0.99.17"
 itertools = "0.10.5"
 maplit = "1.0.2"
-thiserror = "1.0.40"
+thiserror = "2.0.12"
 structopt = "0.3.26"
 check_keyword = "0.2.0"
 katexit = "0.1.4"
diff --git a/ruststep/Cargo.toml b/ruststep/Cargo.toml
index fed5e0e6f..c512ec348 100644
--- a/ruststep/Cargo.toml
+++ b/ruststep/Cargo.toml
@@ -23,7 +23,7 @@ derive_more = "0.99.17"
 derive-new = "0.5.9"
 nom = "7.1.3"
 serde = { version = "1.0.158", features = ["derive"] }
-thiserror = "1.0.40"
+thiserror = "2.0.12"
 Inflector = "0.11.4"
 itertools = "0.10.5"