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