Index: src/SynTree/Attribute.h
===================================================================
--- src/SynTree/Attribute.h	(revision db175c815b9fb1e034519ceec970bdba6f35615c)
+++ src/SynTree/Attribute.h	(revision d0f8b1986e86ea6328fec1b91571f6b6f0757877)
@@ -20,5 +20,5 @@
 
 // GCC attribute
-// https://gcc.gnu.org/onlinedocs/gcc/Attribute-Syntax.html#Attribute-Syntax
+// https://gcc.gnu.org/onlinedocs/gcc-6.1.0/gcc/Attribute-Syntax.html#Attribute-Syntax
 class Attribute {
   public: