diff --git a/Cargo.toml b/Cargo.toml
index da5fac3bfb..854af439cc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -60,7 +60,7 @@ default = [
 ]
 runtime = [
     "tcp",
-    "tokio/time",
+    "tokio/rt-core",
 ]
 tcp = [
     "net2",
diff --git a/examples/single_threaded.rs b/examples/single_threaded.rs
index 7f7db7924b..eb45448862 100644
--- a/examples/single_threaded.rs
+++ b/examples/single_threaded.rs
@@ -1,5 +1,3 @@
-fn main() {}
-/*
 #![deny(warnings)]
 
 use std::cell::Cell;
@@ -74,4 +72,3 @@ where
         tokio::task::spawn_local(fut);
     }
 }
-*/
diff --git a/src/rt.rs b/src/rt.rs
index 4eefab5bf4..4e60139a87 100644
--- a/src/rt.rs
+++ b/src/rt.rs
@@ -5,4 +5,4 @@
 //! If the `runtime` feature is disabled, the types in this module can be used
 //! to plug in other runtimes.
 
-//pub use crate::common::Executor;
+pub use crate::common::Executor;