diff --git a/test/Jamfile b/test/Jamfile
index 7ad76a4..18642a0 100644
--- a/test/Jamfile
+++ b/test/Jamfile
@@ -1,6 +1,6 @@
 #  Boost.Variant2 Library Test Jamfile
 #
-#  Copyright 2015-2017 Peter Dimov
+#  Copyright 2015-2019 Peter Dimov
 #
 #  Distributed under the Boost Software License, Version 1.0.
 #  See accompanying file LICENSE_1_0.txt or copy at
@@ -9,7 +9,19 @@
 import testing ;
 import ../../config/checks/config : requires ;
 
-project : requirements [ requires cxx11_variadic_templates cxx11_template_aliases cxx11_decltype cxx11_constexpr ] ;
+project
+  : default-build
+
+    <warnings>all
+
+  : requirements
+
+    [ requires cxx11_variadic_templates cxx11_template_aliases cxx11_decltype cxx11_constexpr ]
+
+    <toolset>msvc:<warnings-as-errors>on
+    <toolset>gcc:<warnings-as-errors>on
+    <toolset>clang:<warnings-as-errors>on
+  ;
 
 run variant_size.cpp ;
 run variant_alternative.cpp ;