diff --git a/src/JWadhams/JsonLogic.php b/src/JWadhams/JsonLogic.php
index 8e0227d..8e2ff5c 100644
--- a/src/JWadhams/JsonLogic.php
+++ b/src/JWadhams/JsonLogic.php
@@ -2,6 +2,11 @@
 
 namespace JWadhams;
 
+use function is_object;
+use function is_array;
+use function is_string;
+use function count;
+
 class JsonLogic
 {
     private static $custom_operations = [];