diff --git a/src/NXP/Classes/Token/TokenNumber.php b/src/NXP/Classes/Token/TokenNumber.php
index 763ca04..a7eac57 100644
--- a/src/NXP/Classes/Token/TokenNumber.php
+++ b/src/NXP/Classes/Token/TokenNumber.php
@@ -20,6 +20,6 @@ class TokenNumber extends AbstractContainerToken
      */
     public static function getRegex()
     {
-        return '\-?\d+\.?\d*';
+        return '\-?\d+\.?\d*(E-?\d+)?';
     }
 }