diff --git a/examples/variant-11.yy b/examples/variant-11.yy
index c7fd66f9..b4281722 100644
--- a/examples/variant-11.yy
+++ b/examples/variant-11.yy
@@ -15,6 +15,7 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+%require "3.2"
 %debug
 %language "c++"
 %define api.token.constructor
diff --git a/examples/variant.yy b/examples/variant.yy
index 6df428da..b440fa6b 100644
--- a/examples/variant.yy
+++ b/examples/variant.yy
@@ -15,6 +15,7 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+%require "3.2"
 %debug
 %language "c++"
 %define api.token.constructor