diff --git a/src/types.ts b/src/types.ts
index 57ffcd44b7..6fce95706d 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -31,8 +31,12 @@ export interface ExchangeContract {
 }
 
 export interface TokenRegistryContract {
-    getTokenMetaData: any;
-    getTokenAddresses: any;
+    getTokenMetaData: {
+        call: (address: string) => Promise<TokenMetadata>;
+    };
+    getTokenAddresses: {
+        call: () => Promise<string[]>;
+    };
 }
 
 export const SolidityTypes = strEnum([