diff --git a/Cargo.lock b/Cargo.lock
index cfa403b..239683e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1448,7 +1448,7 @@ dependencies = [
  "serial_test",
  "shlex",
  "tempfile",
- "thiserror 1.0.69",
+ "thiserror 2.0.16",
  "toml",
  "uncased",
  "xdg",
diff --git a/Cargo.toml b/Cargo.toml
index bd3d79b..c7aa544 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,7 @@ rust-version = "1.85"
 [dependencies]
 
 serde = { version = "1.0", features = ["derive"] }
-thiserror = "1.0"
+thiserror = "2.0"
 ortho_config = { version = "0.5.0-alpha2", optional = true }
 clap = { version = "4.5", features = ["derive"], optional = true }
 figment = { version = "0.10", default-features = false, features = ["env"], optional = true }