diff --git a/primitives/consensus/beefy/src/lib.rs b/primitives/consensus/beefy/src/lib.rs
index 2e3ec2ef801c5..cc5d1e8cb9a3b 100644
--- a/primitives/consensus/beefy/src/lib.rs
+++ b/primitives/consensus/beefy/src/lib.rs
@@ -302,6 +302,7 @@ impl OpaqueKeyOwnershipProof {
 
 sp_api::decl_runtime_apis! {
 	/// API necessary for BEEFY voters.
+	#[api_version(2)]
 	pub trait BeefyApi
 	{
 		/// Return the block number where BEEFY consensus is enabled/started
diff --git a/primitives/merkle-mountain-range/src/lib.rs b/primitives/merkle-mountain-range/src/lib.rs
index 1c319c4e3934c..436755c032908 100644
--- a/primitives/merkle-mountain-range/src/lib.rs
+++ b/primitives/merkle-mountain-range/src/lib.rs
@@ -422,6 +422,7 @@ impl Error {
 
 sp_api::decl_runtime_apis! {
 	/// API to interact with MMR pallet.
+	#[api_version(2)]
 	pub trait MmrApi<Hash: codec::Codec, BlockNumber: codec::Codec> {
 		/// Return the on-chain MMR root hash.
 		fn mmr_root() -> Result<Hash, Error>;