diff --git a/practica-4/rack_sinatra/Gemfile.lock b/practica-4/rack_sinatra/Gemfile.lock
index 2bc2827..5d7a047 100644
--- a/practica-4/rack_sinatra/Gemfile.lock
+++ b/practica-4/rack_sinatra/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    rack (1.6.4)
+    rack (1.6.13)
     rack-protection (1.5.5)
       rack
     sinatra (1.4.8)