diff --git a/src/lib.rs b/src/lib.rs
index 59f2ca5..9d4e829 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -432,6 +432,15 @@ impl<T: ?Sized> Vec<T> {
             dealloc(self.ptr.as_ptr(), Layout::from_size_align_unchecked(self.capacity, 8));
         }
     }
+
+    /// Extends this vector with an iterator.
+    /// 
+    /// Similar to [`Extend::extend`], but seperate to prevent conflicting implementations.
+    pub fn extend_unsize<U, I: IntoIterator<Item = U>>(&mut self, iter: I) where for<'a> &'a U: CoerceUnsized<&'a T> {
+        for item in iter {
+            self.push_unsize(item);
+        }
+    }
 }
 
 impl<T> Vec<[T]> {