diff --git a/web3.js/module.d.ts b/web3.js/module.d.ts
index 6509952f7d..fe3a0a35ac 100644
--- a/web3.js/module.d.ts
+++ b/web3.js/module.d.ts
@@ -347,6 +347,7 @@ declare module '@solana/web3.js' {
     sign(...signers: Array<Account>): void;
     signPartial(...partialSigners: Array<PublicKey | Account>): void;
     addSigner(signer: Account): void;
+    verifySignatures(): boolean;
     serialize(): Buffer;
   }
 
diff --git a/web3.js/module.flow.js b/web3.js/module.flow.js
index c09f53010a..0c346fae24 100644
--- a/web3.js/module.flow.js
+++ b/web3.js/module.flow.js
@@ -563,6 +563,7 @@ declare module '@solana/web3.js' {
     sign(...signers: Array<Account>): void;
     signPartial(...partialSigners: Array<PublicKey | Account>): void;
     addSigner(signer: Account): void;
+    verifySignatures(): boolean;
     serialize(): Buffer;
   }