diff --git a/tests/Components/ExpressionArrayTest.php b/tests/Components/ExpressionArrayTest.php
index 3cbd3f4e0..2bf44d04b 100644
--- a/tests/Components/ExpressionArrayTest.php
+++ b/tests/Components/ExpressionArrayTest.php
@@ -31,7 +31,7 @@ public function testParse2(): void
         $this->assertEquals('(expr)', $component[0]->expr);
     }
 
-    public function testParseWithCommentsNoOptions()
+    public function testParseWithCommentsNoOptions(): void
     {
         $component = ExpressionArray::parse(
             new Parser(),
@@ -41,7 +41,7 @@ public function testParseWithCommentsNoOptions()
         $this->assertEquals('(expr)', $component[0]->expr);
     }
 
-    public function testParseWithCommentsAndOptions()
+    public function testParseWithCommentsAndOptions(): void
     {
         $component = ExpressionArray::parse(
             new Parser(),