diff --git a/student_recruitment/Gemfile.lock b/student_recruitment/Gemfile.lock
index 91c3903..8d4772c 100644
--- a/student_recruitment/Gemfile.lock
+++ b/student_recruitment/Gemfile.lock
@@ -118,7 +118,7 @@ GEM
       pry (>= 0.10.4)
     public_suffix (3.0.2)
     puma (3.12.4)
-    rack (2.0.8)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)