diff --git a/Cargo.toml b/Cargo.toml
index 6bb64d5..18ef4c2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,4 +9,4 @@ repository = "https://github.com/paritytech/fdlimit"
 
 [dependencies]
 libc = "0.2"
-thiserror = "1.0.50"
+thiserror = "2.0"