diff --git a/Gemfile.lock b/Gemfile.lock
index 909b3b7..4e75cd0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,7 +26,7 @@ GEM
     pry (0.14.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    rack (2.2.4)
+    rack (2.2.6.3)
     ruby2_keywords (0.0.5)
 
 PLATFORMS