diff --git a/Cargo.toml b/Cargo.toml
index 98b98c8e..3e179469 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "skl"
-version = "0.11.0"
+version = "0.11.1"
 edition = "2021"
 rust-version = "1.56.0"
 repository = "https://github.com/al8n/skl"
diff --git a/src/lib.rs b/src/lib.rs
index c27bdd6e..bfd82d8d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -154,6 +154,14 @@ unsafe impl Trailer for u64 {
   }
 }
 
+unsafe impl Trailer for () {
+  /// Returns the version of the trailer.
+  #[inline]
+  fn version(&self) -> u64 {
+    0
+  }
+}
+
 mod sync {
   #[cfg(not(feature = "loom"))]
   pub(crate) use core::sync::atomic::*;