diff --git a/Gemfile.lock b/Gemfile.lock
index 13bd59a..2915066 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -100,7 +100,7 @@ GEM
       rack
       rake (>= 0.8.1)
     racc (1.6.0)
-    rack (2.2.3)
+    rack (2.2.3.1)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.7.1)