diff --git a/Gemfile.lock b/Gemfile.lock
index 5a0d8aa..545ec0e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -141,7 +141,7 @@ GEM
       omniauth (~> 1.9)
     orm_adapter (0.5.0)
     public_suffix (3.0.3)
-    rack (2.0.6)
+    rack (2.2.2)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.7.1)