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diff --git a/original_agents/WTFWT/Cargo.toml b/original_agents/WTFWT/Cargo.toml
index 4936668..998d061 100644
--- a/original_agents/WTFWT/Cargo.toml
+++ b/original_agents/WTFWT/Cargo.toml
@@ -9,6 +9,6 @@ log = "*"
 getopts = "0.2.19"
 fnv = "*"
 float-ord = "*"
-crossbeam = "0.2.5"
+crossbeam = "0.4.1"
 csv = "1.1"
 serde_derive = "1.0.97"