1diff --git a/Cargo.toml b/Cargo.toml
2index d0a13f6..66f5639 100644
3--- a/Cargo.toml
4+++ b/Cargo.toml
5@@ -38,6 +38,8 @@ optional = true
6 default-features = false
7
8 [dev-dependencies]
9+futures = "0.3.21"
10+futures-test = "0.3.21"
11
12 [features]
13 alloc = ["futures-core/alloc"]
14