diff --git a/src/lib.rs b/src/lib.rs
index 57086d38df..259c4eefbe 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -50,7 +50,7 @@ impl PhysicalAddress {
 }
 
 /// Virtual memory address
-#[derive(Clone, Copy, Eq, Ord, PartialEq, PartialOrd)]
+#[derive(Clone, Copy, Eq, Hash, Ord, PartialEq, PartialOrd)]
 #[repr(transparent)]
 pub struct VirtualAddress(usize);