diff --git a/app/weblab-public/Gemfile.lock b/app/weblab-public/Gemfile.lock
index c651729..616634c 100644
--- a/app/weblab-public/Gemfile.lock
+++ b/app/weblab-public/Gemfile.lock
@@ -17,7 +17,7 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    rack (2.0.7)
+    rack (2.2.3)
     rack-protection (2.0.5)
       rack
     rubyzip (1.2.2)