diff --git a/Gemfile.lock b/Gemfile.lock
index 660a76d9..05ed1760 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -360,7 +360,7 @@ GEM
     props (1.2.0)
       iniparser (>= 0.1.0)
     public_suffix (3.0.3)
-    rack (2.0.7)
+    rack (2.2.2)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)