diff --git a/sci-physics/yoda/metadata.xml b/sci-physics/yoda/metadata.xml
index d573312d195..b221b3a1213 100644
--- a/sci-physics/yoda/metadata.xml
+++ b/sci-physics/yoda/metadata.xml
@@ -10,6 +10,7 @@
   in Rivet.
 </longdescription>
 <use>
+  <flag name="c++11"> Build using the C++11 standard</flag>
   <flag name='root'>Adds support for <pkg>sci-physics/root</pkg></flag>
 </use>
 </pkgmetadata>