diff --git a/src/lib.rs b/src/lib.rs
index cde5d390cf25..ce8a45eea653 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,6 +1,7 @@
 #![feature(rustc_private)]
 #![deny(rust_2018_idioms)]
 #![warn(unreachable_pub)]
+#![recursion_limit = "256"]
 
 #[macro_use]
 extern crate derive_new;