diff --git a/cumulus/polkadot-parachain/Cargo.toml b/cumulus/polkadot-parachain/Cargo.toml
index 3c2069c81ef4f..9720e505b59f3 100644
--- a/cumulus/polkadot-parachain/Cargo.toml
+++ b/cumulus/polkadot-parachain/Cargo.toml
@@ -145,3 +145,4 @@ try-runtime = [
 	"shell-runtime/try-runtime",
 	"sp-runtime/try-runtime",
 ]
+beacon-spec-mainnet = []