diff --git a/Gemfile.lock b/Gemfile.lock
index 2d624164..fe1d20c6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -91,7 +91,7 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.0.3)
-    rack (2.0.8)
+    rack (2.2.3)
     rake (12.3.3)
     rest-client (2.0.2)
       http-cookie (>= 1.0.2, < 2.0)