diff --git a/phpcs.xml.dist b/phpcs.xml.dist
index 5642fd91..bf51a72c 100644
--- a/phpcs.xml.dist
+++ b/phpcs.xml.dist
@@ -27,14 +27,7 @@
         <exclude name="PSR2.Methods.MethodDeclaration.Underscore"/>
         <exclude name="PSR12.Properties.ConstantVisibility.NotFound"/>
     </rule>
-    <rule ref="PHPCompatibility">
-        <exclude name="PHPCompatibility.Constants.NewConstants.stream_crypto_method_tlsv1_1_clientFound"/>
-        <exclude name="PHPCompatibility.Constants.NewConstants.stream_crypto_method_tlsv1_2_clientFound"/>
-        <exclude name="PHPCompatibility.Constants.RemovedConstants.intl_idna_variant_2003DeprecatedRemoved"/>
-        <exclude name="PHPCompatibility.FunctionUse.NewFunctions.random_bytesFound"/>
-        <exclude name="PHPCompatibility.IniDirectives.RemovedIniDirectives.mbstring_func_overloadDeprecatedRemoved"/>
-        <exclude name="PHPCompatibility.ParameterValues.NewIDNVariantDefault.NotSet"/>
-    </rule>
+    <rule ref="PHPCompatibility"/>
 
 
     <!--
diff --git a/src/PHPMailer.php b/src/PHPMailer.php
index 91512c43..f37eab7d 100644
--- a/src/PHPMailer.php
+++ b/src/PHPMailer.php
@@ -876,6 +876,7 @@ class PHPMailer
     private function mailPassthru($to, $subject, $body, $header, $params)
     {
         //Check overloading of mail function to avoid double-encoding
+        // phpcs:ignore PHPCompatibility.IniDirectives.RemovedIniDirectives.mbstring_func_overloadDeprecatedRemoved
         if ((int)ini_get('mbstring.func_overload') & 1) {
             $subject = $this->secureHeader($subject);
         } else {
@@ -1585,9 +1586,11 @@ class PHPMailer
                     );
                 } elseif (defined('INTL_IDNA_VARIANT_2003')) {
                     //Fall back to this old, deprecated/removed encoding
+                    // phpcs:ignore PHPCompatibility.Constants.RemovedConstants.intl_idna_variant_2003DeprecatedRemoved
                     $punycode = idn_to_ascii($domain, $errorcode, \INTL_IDNA_VARIANT_2003);
                 } else {
                     //Fall back to a default we don't know about
+                    // phpcs:ignore PHPCompatibility.ParameterValues.NewIDNVariantDefault.NotSet
                     $punycode = idn_to_ascii($domain, $errorcode);
                 }
                 if (false !== $punycode) {
@@ -2958,6 +2961,7 @@ class PHPMailer
         $bytes = '';
         if (function_exists('random_bytes')) {
             try {
+                // phpcs:ignore PHPCompatibility.FunctionUse.NewFunctions.random_bytesFound -- Wrapped in function_exists.
                 $bytes = random_bytes($len);
             } catch (\Exception $e) {
                 //Do nothing
diff --git a/src/SMTP.php b/src/SMTP.php
index 9bf6135a..c3fb54cb 100644
--- a/src/SMTP.php
+++ b/src/SMTP.php
@@ -494,7 +494,9 @@ class SMTP
         //PHP 5.6.7 dropped inclusion of TLS 1.1 and 1.2 in STREAM_CRYPTO_METHOD_TLS_CLIENT
         //so add them back in manually if we can
         if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT')) {
+            // phpcs:ignore PHPCompatibility.Constants.NewConstants.stream_crypto_method_tlsv1_2_clientFound
             $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
+            // phpcs:ignore PHPCompatibility.Constants.NewConstants.stream_crypto_method_tlsv1_1_clientFound
             $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;
         }