diff --git a/Gemfile.lock b/Gemfile.lock
index c0b2462..a86428f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -25,7 +25,7 @@ GEM
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
       rack (>= 1.2, < 3)
-    rack (2.2.19)
+    rack (2.2.20)
     ruby2_keywords (0.0.4)
 
 PLATFORMS