diff --git a/Cargo.toml b/Cargo.toml
index dbbeb2d..db37da5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "fnv"
-version = "1.0.3"
+version = "1.0.4"
 authors = ["Alex Crichton <alex@alexcrichton.com>"]
 description = "Fowler–Noll–Vo hash function"
 license = "Apache-2.0 / MIT"
diff --git a/lib.rs b/lib.rs
index e42abc7..b191f23 100644
--- a/lib.rs
+++ b/lib.rs
@@ -78,8 +78,16 @@ impl Default for FnvHasher {
     }
 }
 
-impl Hasher for FnvHasher {
+impl FnvHasher {
+    /// Create an FNV hasher starting with a state corresponding
+    /// to the hash `key`.
+    #[inline]
+    pub fn with_key(key: u64) -> FnvHasher {
+        FnvHasher(key)
+    }
+}
 
+impl Hasher for FnvHasher {
     #[inline]
     fn finish(&self) -> u64 {
         self.0