1 files changed, 4 insertions, 0 deletions
diff --git a/src/types.ts b/src/types.ts
index c1ba0a5cc..a15b9f4e1 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -419,3 +419,7 @@ export interface Artifact {
         address: string;
     }};
 }
+
+export interface CallOpts {
+    defaultBlock?: Web3.BlockParam;
+}