diff --git a/include/boost/python/detail/config.hpp b/include/boost/python/detail/config.hpp
index 142f56c1..85c7a676 100644
--- a/include/boost/python/detail/config.hpp
+++ b/include/boost/python/detail/config.hpp
@@ -100,7 +100,7 @@
 # define BOOST_PYTHON_EXPORT_CLASS_TEMPLATE(instantiation) struct ThIsTyPeNeVeRuSeD
 #endif
 
-#if (defined(__DECCXX_VER) && __DECCXX_VER <= 60590031)
+#if (defined(__DECCXX_VER) && __DECCXX_VER <= 60590040)
 // Replace broken Tru64/cxx offsetof macro
 # define BOOST_PYTHON_OFFSETOF(s_name, s_member) \
         ((size_t)__INTADDR__(&(((s_name *)0)->s_member)))
diff --git a/include/boost/python/detail/string_literal.hpp b/include/boost/python/detail/string_literal.hpp
index ee8cc0b6..a8e57bba 100644
--- a/include/boost/python/detail/string_literal.hpp
+++ b/include/boost/python/detail/string_literal.hpp
@@ -26,7 +26,7 @@ struct is_string_literal<char const[n]> : mpl::true_
 {
 };
 
-#   if (defined(__DECCXX_VER) && __DECCXX_VER <= 60590031) \
+#   if (defined(__DECCXX_VER) && __DECCXX_VER <= 60590040) \
   || (defined(__sgi) && defined(_COMPILER_VERSION) && _COMPILER_VERSION <= 730)
 // This compiler mistakenly gets the type of string literals as char*
 // instead of char[NN].