diff --git a/composer.json b/composer.json
index 4b4f265..c2327a1 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,8 @@
   "require-dev": {
     "phpunit/phpunit": "6.*",
     "php-coveralls/php-coveralls": "^2.0",
-    "squizlabs/php_codesniffer": "2.*"
+    "squizlabs/php_codesniffer": "3.*",
+    "suin/phpcs-psr4-sniff": "2.*"
   },
   "autoload-dev": {
     "psr-4": {
diff --git a/src/InternalException.php b/src/InternalException.php
index 794fec0..13ccd29 100644
--- a/src/InternalException.php
+++ b/src/InternalException.php
@@ -1,7 +1,7 @@
 <?php
 namespace CashID;
 
-// Create an internal exception type which lets us catch our own exceptions 
+// Create an internal exception type which lets us catch our own exceptions
 // while still passing on system exceptions that we didn't handle.
 class InternalException extends \Exception
 {