diff --git a/meta/libraries.json b/meta/libraries.json
index 40ea0a7..0cbaaca 100644
--- a/meta/libraries.json
+++ b/meta/libraries.json
@@ -14,5 +14,6 @@
   "std": [ "proposal" ],    
   "category": [
     "Math"
-  ]
+  ],
+  "cxxstd": "03"
 }