diff --git a/phpstan-baseline.php b/phpstan-baseline.php
index a7fd4cba69c0..9ed028147f1d 100644
--- a/phpstan-baseline.php
+++ b/phpstan-baseline.php
@@ -1246,51 +1246,11 @@
 	'count' => 1,
 	'path' => __DIR__ . '/system/HTTP/UserAgent.php',
 ];
-$ignoreErrors[] = [
-	'message' => '#^Function delete_cookie\\(\\) has no return type specified\\.$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Helpers/cookie_helper.php',
-];
-$ignoreErrors[] = [
-	'message' => '#^Function set_cookie\\(\\) has no return type specified\\.$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Helpers/cookie_helper.php',
-];
 $ignoreErrors[] = [
 	'message' => '#^Right side of && is always true\\.$#',
 	'count' => 1,
 	'path' => __DIR__ . '/system/Helpers/filesystem_helper.php',
 ];
-$ignoreErrors[] = [
-	'message' => '#^Function d\\(\\) has no return type specified\\.$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Helpers/kint_helper.php',
-];
-$ignoreErrors[] = [
-	'message' => '#^Function d\\(\\) has parameter \\$vars with no type specified\\.$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Helpers/kint_helper.php',
-];
-$ignoreErrors[] = [
-	'message' => '#^Function dd\\(\\) has no return type specified\\.$#',
-	'count' => 2,
-	'path' => __DIR__ . '/system/Helpers/kint_helper.php',
-];
-$ignoreErrors[] = [
-	'message' => '#^Function dd\\(\\) has parameter \\$vars with no type specified\\.$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Helpers/kint_helper.php',
-];
-$ignoreErrors[] = [
-	'message' => '#^Function trace\\(\\) has no return type specified\\.$#',
-	'count' => 2,
-	'path' => __DIR__ . '/system/Helpers/kint_helper.php',
-];
-$ignoreErrors[] = [
-	'message' => '#^Function mock\\(\\) has no return type specified\\.$#',
-	'count' => 1,
-	'path' => __DIR__ . '/system/Helpers/test_helper.php',
-];
 $ignoreErrors[] = [
 	'message' => '#^Method CodeIgniter\\\\Honeypot\\\\Exceptions\\\\HoneypotException\\:\\:forNoHiddenValue\\(\\) has no return type specified\\.$#',
 	'count' => 1,
diff --git a/system/Helpers/cookie_helper.php b/system/Helpers/cookie_helper.php
index 9fc004c28b9a..379481b45376 100755
--- a/system/Helpers/cookie_helper.php
+++ b/system/Helpers/cookie_helper.php
@@ -34,6 +34,8 @@
      * @param bool|null    $httpOnly True makes the cookie accessible via http(s) only (no javascript)
      * @param string|null  $sameSite The cookie SameSite value
      *
+     * @return void
+     *
      * @see \CodeIgniter\HTTP\Response::setCookie()
      */
     function set_cookie(
@@ -91,6 +93,8 @@ function get_cookie($index, bool $xssClean = false, ?string $prefix = '')
      * @param string $path   the cookie path
      * @param string $prefix the cookie prefix
      *
+     * @return void
+     *
      * @see \CodeIgniter\HTTP\Response::deleteCookie()
      */
     function delete_cookie($name, string $domain = '', string $path = '/', string $prefix = '')
diff --git a/system/Helpers/kint_helper.php b/system/Helpers/kint_helper.php
index 10c4f34e938d..eaa2e947bc96 100644
--- a/system/Helpers/kint_helper.php
+++ b/system/Helpers/kint_helper.php
@@ -16,7 +16,9 @@
         /**
          * Prints a Kint debug report and exits.
          *
-         * @param array ...$vars
+         * @param array $vars
+         *
+         * @phpstan-return never
          *
          * @codeCoverageIgnore Can't be tested ... exits
          */
@@ -31,6 +33,13 @@ function dd(...$vars)
         }
     } else {
         // In case that Kint is not loaded.
+        /**
+         * dd function
+         *
+         * @param array $vars
+         *
+         * @return int
+         */
         function dd(...$vars)
         {
             return 0;
@@ -40,6 +49,13 @@ function dd(...$vars)
 
 if (! function_exists('d') && ! class_exists(Kint::class)) {
     // In case that Kint is not loaded.
+    /**
+     * d function
+     *
+     * @param array $vars
+     *
+     * @return int
+     */
     function d(...$vars)
     {
         return 0;
@@ -51,6 +67,11 @@ function d(...$vars)
         /**
          * Provides a backtrace to the current execution point, from Kint.
          */
+        /**
+         * trace function
+         *
+         * @return void
+         */
         function trace()
         {
             Kint::$aliases[] = 'trace';
@@ -58,6 +79,11 @@ function trace()
         }
     } else {
         // In case that Kint is not loaded.
+        /**
+         * trace function
+         *
+         * @return int
+         */
         function trace()
         {
             return 0;
diff --git a/system/Helpers/test_helper.php b/system/Helpers/test_helper.php
index fe6b06794ccd..809a7aabe71b 100644
--- a/system/Helpers/test_helper.php
+++ b/system/Helpers/test_helper.php
@@ -47,6 +47,8 @@ function fake($model, ?array $overrides = null, $persist = true)
      * Used within our test suite to mock certain system tools.
      *
      * @param string $className Fully qualified class name
+     *
+     * @return object
      */
     function mock(string $className)
     {