diff --git a/Cargo.toml b/Cargo.toml
index 644181c..97eed33 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,7 +26,7 @@ backtrace = { version = "0.3.51", optional = true }
 futures = { version = "0.3", default-features = false }
 rustversion = "1.0.6"
 syn = { version = "2.0", features = ["full"] }
-thiserror = "1.0.45"
+thiserror = "2"
 trybuild = { version = "1.0.66", features = ["diff"] }
 
 [lib]