diff --git a/tokio-util/Cargo.toml b/tokio-util/Cargo.toml
index f06bc0bae..e567912ae 100644
--- a/tokio-util/Cargo.toml
+++ b/tokio-util/Cargo.toml
@@ -34,6 +34,8 @@ time = ["tokio/time","slab"]
 io = []
 rt = ["tokio/rt"]
 
+__docs_rs = ["futures-util"]
+
 [dependencies]
 tokio = { version = "1.0.0", path = "../tokio" }
 
@@ -41,6 +43,7 @@ bytes = "0.6.0"
 futures-core = "0.3.0"
 futures-sink = "0.3.0"
 futures-io = { version = "0.3.0", optional = true }
+futures-util = { version = "0.3.0", optional = true }
 log = "0.4"
 pin-project-lite = "0.2.0"
 slab = { version = "0.4.1", optional = true } # Backs `DelayQueue`