| --- | |
| Cargo.toml | 1 + | |
| 1 file changed, 1 insertion(+) | |
| diff --git b/Cargo.toml a/Cargo.toml | |
| index 1f5472d0..ca63f5b5 100644 | |
| --- b/Cargo.toml | |
| +++ a/Cargo.toml | |
| @@ -46,6 +46,7 @@ version = "1.8.0" | |
| optional = true | |
| [dev-dependencies] | |
| +futures = "0.3.21" | |
| [features] | |
| default = ["std"] |