diff --git a/src/Plugin/WebformElement/Captcha.php b/src/Plugin/WebformElement/Captcha.php
index dba51f34a..74fb207bb 100644
--- a/src/Plugin/WebformElement/Captcha.php
+++ b/src/Plugin/WebformElement/Captcha.php
@@ -3,6 +3,7 @@
 namespace Drupal\webform\Plugin\WebformElement;
 
 use Drupal\Core\Form\FormStateInterface;
+use Drupal\webform\Element\WebformMessage as WebformMessageElement;
 use Drupal\webform\Plugin\WebformElementBase;
 use Drupal\webform\WebformSubmissionForm;
 use Drupal\webform\WebformSubmissionInterface;
@@ -155,6 +156,14 @@ class Captcha extends WebformElementBase {
       '#type' => 'fieldset',
       '#title' => $this->t('CAPTCHA settings'),
     ];
+    $form['captcha']['message'] = [
+      '#type' => 'webform_message',
+      '#message_type' => 'warning',
+      '#message_message' => $this->t('Note that the CAPTCHA module disables page caching of pages that include a CAPTCHA challenge.'),
+      '#message_close' => TRUE,
+      '#message_storage' => WebformMessageElement::STORAGE_SESSION,
+      '#access' => TRUE,
+    ];
     $form['captcha']['captcha_type'] = [
       '#type' => 'select',
       '#title' => $this->t('Challenge type'),
diff --git a/third_party_settings/webform.honeypot.inc b/third_party_settings/webform.honeypot.inc
index a97529676..b5db48b7d 100644
--- a/third_party_settings/webform.honeypot.inc
+++ b/third_party_settings/webform.honeypot.inc
@@ -91,6 +91,7 @@ function _webform_honeypot_form(array &$form, FormStateInterface $form_state, $h
   $form['third_party_settings']['honeypot']['time_restriction'] = [
     '#type' => 'checkbox',
     '#title' => t('Add time restriction to %label', $t_args),
+    '#description' => '',
     '#default_value' => $time_restriction,
     '#return_value' => TRUE,
   ];
@@ -108,6 +109,9 @@ function _webform_honeypot_form(array &$form, FormStateInterface $form_state, $h
     }
   }
 
+  $form['third_party_settings']['honeypot']['time_restriction']['#description'] =  ($form['third_party_settings']['honeypot']['time_restriction']['#description'] ? '<br/>' : '')
+    . '<strong>' . t('Page caching will be disabled when a time restriction is applied to a webform.') . '</strong>';
+
   $form['#validate'][] = '_webform_honeypot_form_validate';
 
 }