diff --git a/packages/types-known/src/modules.ts b/packages/types-known/src/modules.ts
index 165bd7d2bc..df1d07dde3 100644
--- a/packages/types-known/src/modules.ts
+++ b/packages/types-known/src/modules.ts
@@ -17,6 +17,9 @@ const typesModules: Record<string, OverrideModuleType> = {
   balances: {
     Status: 'BalanceStatus'
   },
+  beefy: {
+    AuthorityId: 'BeefyId'
+  },
   contracts: {
     StorageKey: 'ContractStorageKey'
   },
diff --git a/packages/types/src/interfaces/beefy/definitions.ts b/packages/types/src/interfaces/beefy/definitions.ts
index bd2999b846..e76bc99c49 100644
--- a/packages/types/src/interfaces/beefy/definitions.ts
+++ b/packages/types/src/interfaces/beefy/definitions.ts
@@ -25,6 +25,7 @@ export default {
       blockNumber: 'BlockNumber',
       validatorSetId: 'ValidatorSetId'
     },
+    BeefyId: '[u8; 33]',
     BeefySignedCommitment: {
       commitment: 'BeefyCommitment',
       signatures: 'Vec<Option<Signature>>'