diff --git a/examples/in-cluster/main.go b/examples/in-cluster/main.go
index b6ffc34f..b94ff440 100644
--- a/examples/in-cluster/main.go
+++ b/examples/in-cluster/main.go
@@ -14,6 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+// Note: the example only works with the code within the same release/branch.
 package main
 
 import (
diff --git a/examples/out-of-cluster/main.go b/examples/out-of-cluster/main.go
index 33bb6a5e..07d0d285 100644
--- a/examples/out-of-cluster/main.go
+++ b/examples/out-of-cluster/main.go
@@ -14,6 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+// Note: the example only works with the code within the same release/branch.
 package main
 
 import (
diff --git a/examples/third-party-resources/main.go b/examples/third-party-resources/main.go
index 0cd9c8f1..f7bbb270 100644
--- a/examples/third-party-resources/main.go
+++ b/examples/third-party-resources/main.go
@@ -14,6 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+// Note: the example only works with the code within the same release/branch.
 package main
 
 import (