diff --git a/include/boost/container_hash/extensions.hpp b/include/boost/container_hash/extensions.hpp
index 29d2c32..35ebe7f 100644
--- a/include/boost/container_hash/extensions.hpp
+++ b/include/boost/container_hash/extensions.hpp
@@ -71,8 +71,8 @@ namespace boost
     }
 
     inline std::size_t hash_range(
-        std::vector<bool>::iterator first,
-        std::vector<bool>::iterator last)
+        std::vector<bool, std::allocator<bool> >::iterator first,
+        std::vector<bool, std::allocator<bool> >::iterator last)
     {
         std::size_t seed = 0;
 
@@ -85,8 +85,8 @@ namespace boost
     }
 
     inline std::size_t hash_range(
-        std::vector<bool>::const_iterator first,
-        std::vector<bool>::const_iterator last)
+        std::vector<bool, std::allocator<bool> >::const_iterator first,
+        std::vector<bool, std::allocator<bool> >::const_iterator last)
     {
         std::size_t seed = 0;
 
@@ -100,8 +100,8 @@ namespace boost
 
     inline void hash_range(
         std::size_t& seed,
-        std::vector<bool>::iterator first,
-        std::vector<bool>::iterator last)
+        std::vector<bool, std::allocator<bool> >::iterator first,
+        std::vector<bool, std::allocator<bool> >::iterator last)
     {
         for(; first != last; ++first)
         {
@@ -111,8 +111,8 @@ namespace boost
 
     inline void hash_range(
         std::size_t& seed,
-        std::vector<bool>::const_iterator first,
-        std::vector<bool>::const_iterator last)
+        std::vector<bool, std::allocator<bool> >::const_iterator first,
+        std::vector<bool, std::allocator<bool> >::const_iterator last)
     {
         for(; first != last; ++first)
         {