diff --git a/lib/random.php b/lib/random.php
index 080b87c..475caab 100644
--- a/lib/random.php
+++ b/lib/random.php
@@ -204,6 +204,7 @@ class_exists('COM')
          *
          * @param mixed $length
          * @psalm-suppress MissingReturnType
+         * @psalm-suppress InvalidReturnType
          * @throws Exception
          * @return string
          */
diff --git a/psalm.xml b/psalm.xml
index ee072a9..596d99d 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -14,5 +14,6 @@
         <InvalidOperand errorLevel="info" />
         <UndefinedConstant errorLevel="info" />
         <MissingReturnType errorLevel="info" />
+        <InvalidReturnType errorLevel="info" />
     </issueHandlers>
 </psalm>