diff --git a/src/Twig/GlobalsExtension.php b/src/Twig/GlobalsExtension.php
index 4a2f7a3..796592b 100644
--- a/src/Twig/GlobalsExtension.php
+++ b/src/Twig/GlobalsExtension.php
@@ -31,7 +31,7 @@ public function __construct(array $globals)
     /**
      * @author Ronan Chilvers <ronan@d3r.com>
      */
-    public function getGlobals()
+    public function getGlobals(): array
     {
         return $this->globals;
     }