diff --git a/DynareBison.yy b/DynareBison.yy
index c04819b7213f5f9e6a8ceda4d2485e1ad717b14b..91233f313bf2fd5a440a13cbbb35272306eed01e 100644
--- a/DynareBison.yy
+++ b/DynareBison.yy
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2003-2013 Dynare Team
+ * Copyright (C) 2003-2014 Dynare Team
  *
  * This file is part of Dynare.
  *
@@ -18,7 +18,7 @@
  */
 
 %skeleton "lalr1.cc"
-%require "2.4"
+%require "2.5"
 %defines
 
 %code top {
diff --git a/macro/MacroBison.yy b/macro/MacroBison.yy
index 272af6a0f5908f5e781e3fd011b5ddb1262d571d..2bd8072a4c598e7a661e01280566ce43877f0d93 100644
--- a/macro/MacroBison.yy
+++ b/macro/MacroBison.yy
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008-2013 Dynare Team
+ * Copyright (C) 2008-2014 Dynare Team
  *
  * This file is part of Dynare.
  *
@@ -18,7 +18,7 @@
  */
 
 %skeleton "lalr1.cc"
-%require "2.4"
+%require "2.5"
 %defines
 
 %code top {