diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1aea5b3a..b39384b6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,7 +27,7 @@ Please also have a look at our
 - 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, #933, #958,
-  #964, #967)
+  #964, #967, #1000)
 - Add visibility to all class/interface constants (#469)
 
 ### Deprecated
diff --git a/src/CSSList/AtRuleBlockList.php b/src/CSSList/AtRuleBlockList.php
index 3266b828..8ced1a97 100644
--- a/src/CSSList/AtRuleBlockList.php
+++ b/src/CSSList/AtRuleBlockList.php
@@ -23,29 +23,21 @@ class AtRuleBlockList extends CSSBlockList implements AtRule
     private $arguments;
 
     /**
-     * @param string $type
-     * @param string $arguments
      * @param int<0, max> $lineNumber
      */
-    public function __construct($type, $arguments = '', $lineNumber = 0)
+    public function __construct(string $type, string $arguments = '', int $lineNumber = 0)
     {
         parent::__construct($lineNumber);
         $this->type = $type;
         $this->arguments = $arguments;
     }
 
-    /**
-     * @return string
-     */
-    public function atRuleName()
+    public function atRuleName(): string
     {
         return $this->type;
     }
 
-    /**
-     * @return string
-     */
-    public function atRuleArgs()
+    public function atRuleArgs(): string
     {
         return $this->arguments;
     }