diff --git a/go-cosmwasm/types/stderror.go b/go-cosmwasm/types/stderror.go
index dc8bf8763..d46286b5d 100644
--- a/go-cosmwasm/types/stderror.go
+++ b/go-cosmwasm/types/stderror.go
@@ -189,7 +189,7 @@ func ToStdError(err error) *StdError {
 }
 
 // check if an interface is nil (even if it has type info)
-func isNil(i interface{}) bool {
+func isNil(i any) bool {
 	if i == nil {
 		return true
 	}