diff --git a/SeptCodingStandard/ruleset.xml b/SeptCodingStandard/ruleset.xml
index 15a2052..4b85042 100644
--- a/SeptCodingStandard/ruleset.xml
+++ b/SeptCodingStandard/ruleset.xml
@@ -86,6 +86,10 @@
 
         <exclude name="SlevomatCodingStandard.Classes.ForbiddenPublicProperty.ForbiddenPublicProperty" />
 
+        <!-- This sniff has been deprecated since Slevomat Coding Standard 8.16.0 and will be removed in Slevomat Coding Standard 9.0.0. Use SlevomatCodingStandard.TypeHints.DNFTypeHintFormat instead. -->
+        <exclude name="SlevomatCodingStandard.TypeHints.UnionTypeHintFormat" />
+        
+
     </rule>