diff --git a/CHANGELOG.md b/CHANGELOG.md
index 50d2dfd8..3dd7e7fa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@ Version 286:
 * Refactor flat_buffer
 * Refactor flat_static_buffer
 * Fix missing include in sha1.hpp
+* Fix ostream warning
 
 API Changes:
 
diff --git a/include/boost/beast/core/detail/ostream.hpp b/include/boost/beast/core/detail/ostream.hpp
index 062a82d7..05861d30 100644
--- a/include/boost/beast/core/detail/ostream.hpp
+++ b/include/boost/beast/core/detail/ostream.hpp
@@ -42,7 +42,7 @@ class ostream_buffer;
 
 template<class DynamicBuffer, class CharT, class Traits>
 class ostream_buffer
-        <DynamicBuffer, CharT, Traits, true>
+        <DynamicBuffer, CharT, Traits, true> final
     : public std::basic_streambuf<CharT, Traits>
 {
     using int_type = typename