diff --git a/meta/libraries.json b/meta/libraries.json
index cf8f649..d72b845 100644
--- a/meta/libraries.json
+++ b/meta/libraries.json
@@ -14,7 +14,8 @@
         ],
         "maintainers": [
             "Peter Dimov <pdimov -at- gmail.com>"
-        ]
+        ],
+        "cxxstd": "03"
     },
     {
         "key": "bind/mem_fn",
@@ -29,6 +30,7 @@
         ],
         "category": [
             "Function-objects"
-        ]
+        ],
+        "cxxstd": "03"
     }
 ]