diff --git a/Gemfile.lock b/Gemfile.lock
index 0084d1e..84f1cc3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -134,7 +134,7 @@ GEM
     pg (1.2.3)
     possessive (1.0.1)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.3.1)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.4.5)