diff --git a/Gemfile.lock b/Gemfile.lock
index e01d921..bc277cb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,7 +43,7 @@ GEM
       ast (~> 2.4.0)
     pg (1.2.3)
     public_suffix (4.0.3)
-    rack (2.2.3)
+    rack (2.2.3.1)
     rack-protection (2.0.8.1)
       rack
     rack-test (1.1.0)