diff --git a/phpstan-baseline.php b/phpstan-baseline.php
index edf7e2771bfb..d3a50f311dcb 100644
--- a/phpstan-baseline.php
+++ b/phpstan-baseline.php
@@ -11,26 +11,11 @@
 	'count' => 1,
 	'path' => __DIR__ . '/system/Autoloader/Autoloader.php',
 ];
-$ignoreErrors[] = [
-	'message' => '#^Method CodeIgniter\\\\BaseModel\\:\\:chunk\\(\\) has no return type specified\\.$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/BaseModel.php',
-];
 $ignoreErrors[] = [
 	'message' => '#^Method CodeIgniter\\\\BaseModel\\:\\:chunk\\(\\) has parameter \\$userFunc with no signature specified for Closure\\.$#',
 	'count' => 1,
 	'path' => __DIR__ . '/system/BaseModel.php',
 ];
-$ignoreErrors[] = [
-	'message' => '#^Method CodeIgniter\\\\BaseModel\\:\\:doOnlyDeleted\\(\\) has no return type specified\\.$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/BaseModel.php',
-];
-$ignoreErrors[] = [
-	'message' => '#^Method CodeIgniter\\\\BaseModel\\:\\:initialize\\(\\) has no return type specified\\.$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/BaseModel.php',
-];
 $ignoreErrors[] = [
 	'message' => '#^Method CodeIgniter\\\\Cache\\\\CacheInterface\\:\\:initialize\\(\\) has no return type specified\\.$#',
 	'count' => 1,
@@ -1536,21 +1521,11 @@
 	'count' => 1,
 	'path' => __DIR__ . '/system/Log/Handlers/ChromeLoggerHandler.php',
 ];
-$ignoreErrors[] = [
-	'message' => '#^Method CodeIgniter\\\\Model\\:\\:chunk\\(\\) has no return type specified\\.$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Model.php',
-];
 $ignoreErrors[] = [
 	'message' => '#^Method CodeIgniter\\\\Model\\:\\:chunk\\(\\) has parameter \\$userFunc with no signature specified for Closure\\.$#',
 	'count' => 1,
 	'path' => __DIR__ . '/system/Model.php',
 ];
-$ignoreErrors[] = [
-	'message' => '#^Method CodeIgniter\\\\Model\\:\\:doOnlyDeleted\\(\\) has no return type specified\\.$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Model.php',
-];
 $ignoreErrors[] = [
 	'message' => '#^Method CodeIgniter\\\\Pager\\\\Exceptions\\\\PagerException\\:\\:forInvalidPaginationGroup\\(\\) has no return type specified\\.$#',
 	'count' => 1,
diff --git a/system/BaseModel.php b/system/BaseModel.php
index 0f316e6ffa3f..cd8b475196d5 100644
--- a/system/BaseModel.php
+++ b/system/BaseModel.php
@@ -338,6 +338,8 @@ public function __construct(?ValidationInterface $validation = null)
     /**
      * Initializes the instance with any additional steps.
      * Optionally implemented by child classes.
+     *
+     * @return void
      */
     protected function initialize()
     {
@@ -458,6 +460,8 @@ abstract protected function doPurgeDeleted();
      * Works with the find* methods to return only the rows that
      * have been deleted.
      * This method works only with dbCalls.
+     *
+     * @return void
      */
     abstract protected function doOnlyDeleted();
 
@@ -524,6 +528,8 @@ abstract public function countAllResults(bool $reset = true, bool $test = false)
      * @param int     $size     Size
      * @param Closure $userFunc Callback Function
      *
+     * @return void
+     *
      * @throws DataException
      */
     abstract public function chunk(int $size, Closure $userFunc);
diff --git a/system/Model.php b/system/Model.php
index a9c8e4f2eba9..cc901f831de1 100644
--- a/system/Model.php
+++ b/system/Model.php
@@ -474,6 +474,8 @@ protected function doPurgeDeleted()
      * Works with the find* methods to return only the rows that
      * have been deleted.
      * This method works only with dbCalls.
+     *
+     * @return void
      */
     protected function doOnlyDeleted()
     {
@@ -554,6 +556,8 @@ public function getIdValue($data)
      * determine the rows to operate on.
      * This method works only with dbCalls.
      *
+     * @return void
+     *
      * @throws DataException
      */
     public function chunk(int $size, Closure $userFunc)