diff --git a/WordPress-Extra/ruleset.xml b/WordPress-Extra/ruleset.xml
index f2f028d8e9..c8b604d90f 100644
--- a/WordPress-Extra/ruleset.xml
+++ b/WordPress-Extra/ruleset.xml
@@ -176,4 +176,13 @@
 		 https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards/issues/919 -->
 	<rule ref="WordPress.Classes.ClassInstantiation"/>
 
+	<!--
+	#############################################################################
+	Code style sniffs for more recent PHP features and syntaxes.
+	#############################################################################
+	-->
+
+	<!-- Check for single blank line after namespace declaration. -->
+	<rule ref="PSR2.Namespaces.NamespaceDeclaration"/>
+
 </ruleset>