diff --git a/status/explicit-failures-markup.xml b/status/explicit-failures-markup.xml
index 615c88e9bf..c730231f6d 100644
--- a/status/explicit-failures-markup.xml
+++ b/status/explicit-failures-markup.xml
@@ -5441,6 +5441,14 @@ for more information.
         Unsupported compiler
       </note>
     </mark-unusable>
+    <mark-unusable>
+      <toolset name="*~c++98"/>
+      <toolset name="*~gnu98"/>
+      <toolset name="*~gnu++98"/>
+      <note author="Daniel James" date="29 Jan 2018">
+        C++11 mode (or later) required
+      </note>
+    </mark-unusable>
   </library>
 
     <!-- random -->