diff --git a/testing/simulator/src/main.rs b/testing/simulator/src/main.rs
index 9e05a539c..0627ba7dd 100644
--- a/testing/simulator/src/main.rs
+++ b/testing/simulator/src/main.rs
@@ -1,4 +1,4 @@
-#![recursion_limit = "256"]
+#![recursion_limit = "512"]
 
 //! This crate provides a simluation that creates `n` beacon node and validator clients, each with
 //! `v` validators. A deposit contract is deployed at the start of the simulation using a local