diff --git a/services/commtest/Cargo.lock b/services/commtest/Cargo.lock
--- a/services/commtest/Cargo.lock
+++ b/services/commtest/Cargo.lock
@@ -301,6 +301,7 @@
  "derive_more",
  "grpc_clients",
  "hex",
+ "once_cell",
  "rand",
  "serde",
  "serde_json",