diff --git a/composer.json b/composer.json
index 8889cbd..f107dea 100644
--- a/composer.json
+++ b/composer.json
@@ -29,7 +29,7 @@
     },
     "require": {
         "php": "^7|^8",
-        "paragonie/constant_time_encoding": "^2"
+        "paragonie/constant_time_encoding": "^2|^3"
     },
     "require-dev": {
         "phpunit/phpunit": "^6|^7|^8|^9",
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 2af728d..8808ccc 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -10,16 +10,10 @@
     processIsolation="false"
     stopOnError="false"
     stopOnFailure="false"
-    syntaxCheck="true"
 >
     <testsuites>
         <testsuite name="Unit Tests">
             <directory suffix="Test.php">./tests</directory>
         </testsuite>
     </testsuites>
-    <filter>
-        <whitelist processUncoveredFilesFromWhitelist="true">
-            <directory suffix=".php">./src</directory>
-        </whitelist>
-    </filter>
 </phpunit>
\ No newline at end of file
diff --git a/psalm.xml b/psalm.xml
index c36e3ee..9abccae 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -14,5 +14,6 @@
         <TypeDoesNotContainType errorLevel="info" />
         <MixedArgumentTypeCoercion errorLevel="info" />
         <UnnecessaryVarAnnotation errorLevel="info" />
+        <PossiblyInvalidArrayOffset errorLevel="info" />
     </issueHandlers>
 </psalm>