diff --git a/package.json b/package.json
index 52a8f61..13bee8f 100755
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ethers-multicall",
-  "version": "0.1.6",
+  "version": "0.2.0",
   "description": "Make multiple Ethereum network requests in a single HTTP query. ethcall for ethers v5.",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
diff --git a/src/contract.ts b/src/contract.ts
index eeae475..461cd5d 100644
--- a/src/contract.ts
+++ b/src/contract.ts
@@ -39,7 +39,7 @@ export class Contract {
 }
 
 function toFragment(abi: JsonFragment[] | string[] | Fragment[]): Fragment[] {
-  return abi.map(item => utils.Fragment.from(item));
+  return abi.map((item: JsonFragment | string | Fragment) => utils.Fragment.from(item));
 }
 
 function makeCallFunction(contract: Contract, name: string) {