diff --git a/include/boost/variant2/variant.hpp b/include/boost/variant2/variant.hpp
index 7300837..aec8966 100644
--- a/include/boost/variant2/variant.hpp
+++ b/include/boost/variant2/variant.hpp
@@ -689,8 +689,11 @@ template<class T1, class... T> union variant_storage_impl<mp11::mp_true, T1, T..
 # pragma GCC diagnostic push
 // False positive in at least GCC 7 and GCC 10 ASAN triggered by monostate (via result<void>)
 # pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#if __GNUC__ >= 12
+// False positive in at least GCC 12 and GCC 13 ASAN and -Og triggered by monostate (via result<void>)
+# pragma GCC diagnostic ignored "-Wuninitialized"
+#endif
 #endif
-
         *this = variant_storage_impl( mp11::mp_size_t<I>(), std::forward<A>(a)... );
 
 #if defined(BOOST_GCC) && (__GNUC__ >= 7)