--- futures-0.3.21/Cargo.toml	1970-01-01T00:00:01+00:00
+++ futures-0.3.21/Cargo.toml	2022-02-07T23:23:36.680712+00:00
@@ -89,6 +89,9 @@
 [dev-dependencies.static_assertions]
 version = "1"
 
+[dev-dependencies.futures-test]
+version = "0.3.21"
+
 [dev-dependencies.tokio]
 version = "0.1.11"