diff --git a/CHANGELOG.md b/CHANGELOG.md
index 90c6d35a..44a3697a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -26,7 +26,7 @@ Please also have a look at our
 - Only allow `string` for some `OutputFormat` properties (#885)
 - Make all non-private properties `@internal` (#886)
 - Use more native type declarations and strict mode
-  (#641, #772, #774, #778, #804, #841, #873, #875, #891, #922, #923)
+  (#641, #772, #774, #778, #804, #841, #873, #875, #891, #922, #923, #933)
 - Add visibility to all class/interface constants (#469)
 
 ### Deprecated
diff --git a/src/Settings.php b/src/Settings.php
index c684a690..1765aafa 100644
--- a/src/Settings.php
+++ b/src/Settings.php
@@ -46,10 +46,7 @@ private function __construct()
         $this->bMultibyteSupport = \extension_loaded('mbstring');
     }
 
-    /**
-     * @return self new instance
-     */
-    public static function create(): Settings
+    public static function create(): self
     {
         return new Settings();
     }
@@ -60,11 +57,9 @@ public static function create(): Settings
      * If `true` (`mbstring` extension must be enabled), will use (slower) `mb_strlen`, `mb_convert_case`, `mb_substr`
      * and `mb_strpos` functions. Otherwise, the normal (ASCII-Only) functions will be used.
      *
-     * @param bool $bMultibyteSupport
-     *
      * @return $this fluent interface
      */
-    public function withMultibyteSupport($bMultibyteSupport = true): self
+    public function withMultibyteSupport(bool $bMultibyteSupport = true): self
     {
         $this->bMultibyteSupport = $bMultibyteSupport;
         return $this;
@@ -73,11 +68,9 @@ public function withMultibyteSupport($bMultibyteSupport = true): self
     /**
      * Sets the charset to be used if the CSS does not contain an `@charset` declaration.
      *
-     * @param string $sDefaultCharset
-     *
      * @return $this fluent interface
      */
-    public function withDefaultCharset($sDefaultCharset): self
+    public function withDefaultCharset(string $sDefaultCharset): self
     {
         $this->sDefaultCharset = $sDefaultCharset;
         return $this;
@@ -86,11 +79,9 @@ public function withDefaultCharset($sDefaultCharset): self
     /**
      * Configures whether the parser should silently ignore invalid rules.
      *
-     * @param bool $usesLenientParsing
-     *
      * @return $this fluent interface
      */
-    public function withLenientParsing($usesLenientParsing = true): self
+    public function withLenientParsing(bool $usesLenientParsing = true): self
     {
         $this->bLenientParsing = $usesLenientParsing;
         return $this;