diff --git a/arcanist/phpcs.xml b/arcanist/phpcs.xml
index 7ab58aa5ff..2552c1c627 100644
--- a/arcanist/phpcs.xml
+++ b/arcanist/phpcs.xml
@@ -1,59 +1,60 @@
 <?xml version="1.0"?>
 <ruleset name="BitcoinABC Standard" namespace="BitcoinABC\CS\Standard">
 
     <description>
         BitcoinABC PHP coding standard.
     </description>
 
     <rule ref="Generic">
         <exclude name="Generic.Arrays.ArrayIndent" />
         <exclude name="Generic.Arrays.DisallowLongArraySyntax.Found" />
         <exclude name="Generic.Arrays.DisallowShortArraySyntax.Found" />
         <exclude name="Generic.CodeAnalysis.AssignmentInCondition.Found" />
         <exclude name="Generic.CodeAnalysis.UnusedFunctionParameter.Found" />
         <exclude name="Generic.CodeAnalysis.UnusedFunctionParameter.FoundInExtendedClassAfterLastUsed" />
         <exclude name="Generic.CodeAnalysis.UnusedFunctionParameter.FoundInExtendedClassBeforeLastUsed" />
         <exclude name="Generic.Commenting.DocComment.NonParamGroup" />
         <exclude name="Generic.Commenting.DocComment.ParamNotFirst" />
         <exclude name="Generic.Commenting.DocComment.SpacingBeforeTags" />
         <exclude name="Generic.Commenting.DocComment.TagValueIndent" />
         <exclude name="Generic.Commenting.Fixme.TaskFound" />
         <exclude name="Generic.Commenting.Todo.TaskFound" />
         <exclude name="Generic.Files.EndFileNoNewline.Found" />
         <exclude name="Generic.Files.LowercasedFilename" />
         <exclude name="Generic.Formatting.MultipleStatementAlignment" />
         <exclude name="Generic.Formatting.SpaceAfterCast.NoSpace" />
         <exclude name="Generic.Formatting.SpaceAfterNot" />
         <exclude name="Generic.Functions.OpeningFunctionBraceBsdAllman" />
         <exclude name="Generic.Metrics.CyclomaticComplexity.TooHigh" />
         <exclude name="Generic.PHP.ClosingPHPTag" />
+        <exclude name="Generic.PHP.RequireStrictTypes.MissingDeclaration" />
         <exclude name="Generic.PHP.UpperCaseConstant" />
         <exclude name="Generic.WhiteSpace.DisallowSpaceIndent" />
     </rule>
 
     <rule ref="Generic.NamingConventions.CamelCapsFunctionName">
         <properties>
             <property name="strict" value="false" />
         </properties>
     </rule>
 
     <rule ref="Generic.Strings.UnnecessaryStringConcat">
         <properties>
             <property name="allowMultiline" value="true" />
         </properties>
     </rule>
 
     <rule ref="Generic.WhiteSpace.ScopeIndent">
         <properties>
             <property name="indent" value="2" />
             <property name="exact" value="true" />
             <property name="ignoreIndentationTokens" type="array"
                 value="T_COMMENT, T_OBJECT_OPERATOR" />
         </properties>
     </rule>
 
     <rule ref="PSR2.Files.ClosingTag" />
 
     <rule ref="Squiz.WhiteSpace.SuperfluousWhitespace" />
 
 </ruleset>