diff --git a/rails/tweet_app/Gemfile.lock b/rails/tweet_app/Gemfile.lock
index ea5b762..847c987 100644
--- a/rails/tweet_app/Gemfile.lock
+++ b/rails/tweet_app/Gemfile.lock
@@ -78,7 +78,7 @@ GEM
     pry-rails (0.3.4)
       pry (>= 0.9.10)
     puma (3.6.2)
-    rack (2.0.4)
+    rack (2.2.3)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.3)