1 files changed, 5 insertions, 0 deletions
diff --git a/packages/web3-typescript-typings/index.d.ts b/packages/web3-typescript-typings/index.d.ts
index 7089556f4..01ee172b5 100644
--- a/packages/web3-typescript-typings/index.d.ts
+++ b/packages/web3-typescript-typings/index.d.ts
@@ -35,6 +35,7 @@ declare module 'web3' {
         public fromWei(amount: number|BigNumber.BigNumber, unit: string): BigNumber.BigNumber;
         public toWei(amount: number|BigNumber.BigNumber, unit: string): BigNumber.BigNumber;
         public isAddress(address: string): boolean;
+        public sha3(value: string, options?: Web3.Sha3Options): string;
     }
 
     namespace providers {
@@ -99,6 +100,10 @@ declare module 'web3' {
         }
 
         interface Provider {}
+
+        interface Sha3Options {
+            encoding: string
+        }
     }
     /* tslint:disable */
     export = Web3;