diff --git a/src/reactor/timeout.rs b/src/reactor/timeout.rs
index e1a8f3f7a..5c96e5b0e 100644
--- a/src/reactor/timeout.rs
+++ b/src/reactor/timeout.rs
@@ -18,6 +18,7 @@ use reactor::timeout_token::TimeoutToken;
 /// Note that timeouts are not intended for high resolution timers, but rather
 /// they will likely fire some granularity after the exact instant that they're
 /// otherwise indicated to fire at.
+#[derive(Debug)]
 pub struct Timeout {
     token: TimeoutToken,
     when: Instant,
diff --git a/src/reactor/timeout_token.rs b/src/reactor/timeout_token.rs
index 9b6e5feb1..d27cfaea9 100644
--- a/src/reactor/timeout_token.rs
+++ b/src/reactor/timeout_token.rs
@@ -6,6 +6,7 @@ use futures::task;
 use reactor::{Message, Handle, Remote};
 
 /// A token that identifies an active timeout.
+#[derive(Debug)]
 pub struct TimeoutToken {
     token: usize,
 }