diff --git a/include/boost/unordered_set.hpp b/include/boost/unordered_set.hpp
index ed5e08a4..0db03dba 100644
--- a/include/boost/unordered_set.hpp
+++ b/include/boost/unordered_set.hpp
@@ -129,11 +129,21 @@ namespace boost
 
         // iterators
 
+        iterator begin()
+        {
+            return iterator(base.begin());
+        }
+
         const_iterator begin() const
         {
             return const_iterator(base.begin());
         }
 
+        iterator end()
+        {
+            return iterator(base.end());
+        }
+
         const_iterator end() const
         {
             return const_iterator(base.end());
@@ -236,16 +246,27 @@ namespace boost
             return base.bucket(k);
         }
 
-        const_local_iterator begin(size_type n) const
+        local_iterator begin(size_type n)
         {
             return local_iterator(base.begin(n));
         }
 
+        const_local_iterator begin(size_type n) const
+        {
+            return const_local_iterator(base.begin(n));
+        }
+
+        local_iterator end(size_type n)
+        {
+            return local_iterator(base.end(n));
+        }
+
         const_local_iterator end(size_type n) const
         {
             return const_local_iterator(base.end(n));
         }
 
+
         // hash policy
 
         float load_factor() const
@@ -377,11 +398,21 @@ namespace boost
 
         // iterators
 
+        iterator begin()
+        {
+            return iterator(base.begin());
+        }
+
         const_iterator begin() const
         {
             return const_iterator(base.begin());
         }
 
+        iterator end()
+        {
+            return iterator(base.end());
+        }
+
         const_iterator end() const
         {
             return const_iterator(base.end());
@@ -483,11 +514,21 @@ namespace boost
             return base.bucket(k);
         }
 
+        local_iterator begin(size_type n)
+        {
+            return local_iterator(base.begin(n));
+        }
+
         const_local_iterator begin(size_type n) const
         {
             return const_local_iterator(base.begin(n));
         }
 
+        local_iterator end(size_type n)
+        {
+            return local_iterator(base.end(n));
+        }
+
         const_local_iterator end(size_type n) const
         {
             return const_local_iterator(base.end(n));