diff --git a/WordPress/Helpers/ConstantsHelper.php b/WordPress/Helpers/ConstantsHelper.php
index 2c82401bb8..506254b2a1 100644
--- a/WordPress/Helpers/ConstantsHelper.php
+++ b/WordPress/Helpers/ConstantsHelper.php
@@ -26,6 +26,8 @@
  * {@internal The functionality in this class will likely be replaced at some point in
  * the future by functions from PHPCSUtils.}
  *
+ * @internal
+ *
  * @package WPCS\WordPressCodingStandards
  * @since   3.0.0 The method in this class was previously contained in the
  *                `WordPressCS\WordPress\Sniff` class and has been moved here.
diff --git a/WordPress/Helpers/ContextHelper.php b/WordPress/Helpers/ContextHelper.php
index a7ccc979c8..aeaf4b1e34 100644
--- a/WordPress/Helpers/ContextHelper.php
+++ b/WordPress/Helpers/ContextHelper.php
@@ -23,6 +23,8 @@
  * This also means that it has no promise of backward compatibility. Use at your own risk.
  * ---------------------------------------------------------------------------------------------
  *
+ * @internal
+ *
  * @package WPCS\WordPressCodingStandards
  * @since   3.0.0 The methods in this class were previously contained in the
  *                `WordPressCS\WordPress\Sniff` class and have been moved here.
diff --git a/WordPress/Helpers/DeprecationHelper.php b/WordPress/Helpers/DeprecationHelper.php
index 33085e525e..2a7a665473 100644
--- a/WordPress/Helpers/DeprecationHelper.php
+++ b/WordPress/Helpers/DeprecationHelper.php
@@ -23,6 +23,8 @@
  * {@internal The functionality in this class will likely be replaced at some point in
  * the future by functions from PHPCSUtils.}
  *
+ * @internal
+ *
  * @package WPCS\WordPressCodingStandards
  * @since   3.0.0 The method in this class was previously contained in the
  *                `WordPressCS\WordPress\Sniff` class and has been moved here.
diff --git a/WordPress/Helpers/ListHelper.php b/WordPress/Helpers/ListHelper.php
index 8649a8462b..a58610c124 100644
--- a/WordPress/Helpers/ListHelper.php
+++ b/WordPress/Helpers/ListHelper.php
@@ -25,6 +25,8 @@
  * {@internal The functionality in this class will likely be replaced at some point in
  * the future by functions from PHPCSUtils.}
  *
+ * @internal
+ *
  * @package WPCS\WordPressCodingStandards
  * @since   3.0.0 The method in this class was previously contained in the
  *                `WordPressCS\WordPress\Sniff` class and has been moved here.
diff --git a/WordPress/Helpers/RulesetPropertyHelper.php b/WordPress/Helpers/RulesetPropertyHelper.php
index 0411e95930..3722266ac9 100644
--- a/WordPress/Helpers/RulesetPropertyHelper.php
+++ b/WordPress/Helpers/RulesetPropertyHelper.php
@@ -17,6 +17,8 @@
  * This also means that it has no promise of backward compatibility. Use at your own risk.
  * ---------------------------------------------------------------------------------------------
  *
+ * @internal
+ *
  * @package WPCS\WordPressCodingStandards
  * @since   3.0.0 The method in this class was previously contained in the
  *                `WordPressCS\WordPress\Sniff` class and has been moved here.
diff --git a/WordPress/Helpers/SnakeCaseHelper.php b/WordPress/Helpers/SnakeCaseHelper.php
index a6bf69dd74..5dd559cf9e 100644
--- a/WordPress/Helpers/SnakeCaseHelper.php
+++ b/WordPress/Helpers/SnakeCaseHelper.php
@@ -22,6 +22,8 @@
  * {@internal The functionality in this class will likely be replaced at some point in
  * the future by functions from PHPCSUtils.}
  *
+ * @internal
+ *
  * @package WPCS\WordPressCodingStandards
  * @since   3.0.0 The method in this class was previously contained in the
  *                `WordPressCS\WordPress\Sniff` class and has been moved here.
diff --git a/WordPress/Helpers/VariableHelper.php b/WordPress/Helpers/VariableHelper.php
index 428de8ab1a..68ca0d6bd7 100644
--- a/WordPress/Helpers/VariableHelper.php
+++ b/WordPress/Helpers/VariableHelper.php
@@ -25,6 +25,8 @@
  * {@internal The functionality in this class will likely be replaced at some point in
  * the future by functions from PHPCSUtils.}
  *
+ * @internal
+ *
  * @package WPCS\WordPressCodingStandards
  * @since   3.0.0 The methods in this class were previously contained in the
  *                `WordPressCS\WordPress\Sniff` class and have been moved here.