diff --git a/practica-4/Gemfile.lock b/practica-4/Gemfile.lock
old mode 100755
new mode 100644
index 16944be..8b07092
--- a/practica-4/Gemfile.lock
+++ b/practica-4/Gemfile.lock
@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    rack (1.6.4)
+    rack (1.6.11)
     rack-protection (1.5.5)
       rack
     sinatra (1.4.8)