diff --git a/tests/example-schema.yang b/tests/example-schema.yang
index 04ae22d..da45afd 100644
--- a/tests/example-schema.yang
+++ b/tests/example-schema.yang
@@ -1,4 +1,5 @@
 module example-schema {
+    yang-version 1.1;
     prefix aha;
     namespace "http://example.com";
 
@@ -184,6 +185,15 @@
                 enum E;
             }
         }
+
+        action shutdown {
+            output {
+                leaf success {
+                    mandatory true;
+                    type boolean;
+                }
+            }
+        }
     }
 
     list org {