diff --git a/src/app/Gemfile.lock b/src/app/Gemfile.lock
index 11ab22e2..5c2bcb94 100644
--- a/src/app/Gemfile.lock
+++ b/src/app/Gemfile.lock
@@ -180,7 +180,7 @@ GEM
     pg (1.1.4)
     public_suffix (3.1.1)
     puma (3.12.1)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)