diff --git a/codex-rs/core/src/lib.rs b/codex-rs/core/src/lib.rs
index 994385150c..8f0e479410 100644
--- a/codex-rs/core/src/lib.rs
+++ b/codex-rs/core/src/lib.rs
@@ -1,5 +1,6 @@
 //! Root of the `codex-core` library.
 
+#![recursion_limit = "256"]
 // Prevent accidental direct writes to stdout/stderr in library code. All
 // user-visible output must go through the appropriate abstraction (e.g.,
 // the TUI or the tracing stack).