diff --git a/src/time/cuc.rs b/src/time/cuc.rs
index 9125e51..eec2801 100644
--- a/src/time/cuc.rs
+++ b/src/time/cuc.rs
@@ -9,7 +9,6 @@ use serde::{Deserialize, Serialize};
 use core::fmt::{Debug, Display, Formatter};
 use core::ops::{Add, AddAssign};
 use core::time::Duration;
-use core::u64;
 
 use crate::ByteConversionError;
 
diff --git a/src/time/mod.rs b/src/time/mod.rs
index 215a30e..63cb5af 100644
--- a/src/time/mod.rs
+++ b/src/time/mod.rs
@@ -6,7 +6,6 @@ use core::cmp::Ordering;
 use core::fmt::{Display, Formatter};
 use core::ops::{Add, AddAssign, Sub};
 use core::time::Duration;
-use core::u8;
 
 #[allow(unused_imports)]
 #[cfg(not(feature = "std"))]