diff --git a/quic/s2n-quic-sim/Cargo.toml b/quic/s2n-quic-sim/Cargo.toml
index e8c445eb33..0a38b15478 100644
--- a/quic/s2n-quic-sim/Cargo.toml
+++ b/quic/s2n-quic-sim/Cargo.toml
@@ -16,7 +16,7 @@ bytes = "1"
 humantime = "2"
 indicatif = { version = "0.17", features = ["rayon"] }
 once_cell = "1"
-prost = "0.12"
+prost = "0.13"
 rand = "0.8"
 rayon = "1"
 s2n-quic = { path = "../s2n-quic", features = ["unstable-provider-io-testing", "provider-event-tracing"] }