diff --git a/test/container/Jamfile.v2 b/test/container/Jamfile.v2
index b9a378d4..b5f89567 100644
--- a/test/container/Jamfile.v2
+++ b/test/container/Jamfile.v2
@@ -8,6 +8,7 @@ import testing ;
 project unordered-test/container
     : requirements
         <toolset>intel-linux:"<cxxflags>-strict_ansi -cxxlib-icc"
+        <toolset>gcc:<cxxflags>-Wsign-promo
     ;
 
 test-suite container-tests
diff --git a/test/exception/Jamfile.v2 b/test/exception/Jamfile.v2
index 5feb6125..fccc5097 100644
--- a/test/exception/Jamfile.v2
+++ b/test/exception/Jamfile.v2
@@ -11,6 +11,7 @@ alias framework : /boost/test//boost_unit_test_framework ;
 project unordered-test/exception-tests
     : requirements
         <toolset>intel-linux:"<cxxflags>-strict_ansi -cxxlib-icc"
+        <toolset>gcc:<cxxflags>-Wsign-promo
     ;
 
 test-suite unordered-tests
diff --git a/test/unordered/Jamfile.v2 b/test/unordered/Jamfile.v2
index 07186630..64cd63d1 100644
--- a/test/unordered/Jamfile.v2
+++ b/test/unordered/Jamfile.v2
@@ -8,6 +8,7 @@ import testing ;
 project unordered-test/unordered
     : requirements
         <toolset>intel-linux:"<cxxflags>-strict_ansi -cxxlib-icc"
+        <toolset>gcc:<cxxflags>-Wsign-promo
     ;
 
 test-suite unordered-tests