diff --git a/include/boost/regex/v5/basic_regex.hpp b/include/boost/regex/v5/basic_regex.hpp
index 5c73775f..230dc514 100644
--- a/include/boost/regex/v5/basic_regex.hpp
+++ b/include/boost/regex/v5/basic_regex.hpp
@@ -488,7 +488,7 @@ public:
    }
    //
    // swap:
-   void  swap(basic_regex& that)throw()
+   void  swap(basic_regex& that)noexcept
    {
       m_pimpl.swap(that.m_pimpl);
    }