diff --git a/ejemplos/ar/03-validaciones/Gemfile.lock b/ejemplos/ar/03-validaciones/Gemfile.lock
index 005650d..95ce28f 100644
--- a/ejemplos/ar/03-validaciones/Gemfile.lock
+++ b/ejemplos/ar/03-validaciones/Gemfile.lock
@@ -1,44 +1,46 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    actionpack (6.0.3.4)
-      actionview (= 6.0.3.4)
-      activesupport (= 6.0.3.4)
+    actionpack (6.0.3.5)
+      actionview (= 6.0.3.5)
+      activesupport (= 6.0.3.5)
       rack (~> 2.0, >= 2.0.8)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.2.0)
-    actionview (6.0.3.4)
-      activesupport (= 6.0.3.4)
+    actionview (6.0.3.5)
+      activesupport (= 6.0.3.5)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.1, >= 1.2.0)
-    activemodel (6.0.3.4)
-      activesupport (= 6.0.3.4)
-    activerecord (6.0.3.4)
-      activemodel (= 6.0.3.4)
-      activesupport (= 6.0.3.4)
-    activesupport (6.0.3.4)
+    activemodel (6.0.3.5)
+      activesupport (= 6.0.3.5)
+    activerecord (6.0.3.5)
+      activemodel (= 6.0.3.5)
+      activesupport (= 6.0.3.5)
+    activesupport (6.0.3.5)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
       zeitwerk (~> 2.2, >= 2.2.2)
     builder (3.2.4)
-    concurrent-ruby (1.1.7)
+    concurrent-ruby (1.1.8)
     crass (1.0.6)
-    erubi (1.9.0)
-    i18n (1.8.5)
+    erubi (1.10.0)
+    i18n (1.8.9)
       concurrent-ruby (~> 1.0)
-    loofah (2.7.0)
+    loofah (2.9.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     method_source (1.0.0)
-    mini_portile2 (2.4.0)
-    minitest (5.14.2)
-    nokogiri (1.10.10)
-      mini_portile2 (~> 2.4.0)
+    mini_portile2 (2.5.0)
+    minitest (5.14.4)
+    nokogiri (1.11.1)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
+    racc (1.5.2)
     rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -47,23 +49,23 @@ GEM
       nokogiri (>= 1.6)
     rails-html-sanitizer (1.3.0)
       loofah (~> 2.3)
-    railties (6.0.3.4)
-      actionpack (= 6.0.3.4)
-      activesupport (= 6.0.3.4)
+    railties (6.0.3.5)
+      actionpack (= 6.0.3.5)
+      activesupport (= 6.0.3.5)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.20.3, < 2.0)
-    rake (13.0.1)
+    rake (13.0.3)
     sqlite3 (1.4.2)
     standalone_migrations (6.0.0)
       activerecord (>= 4.2.7, < 6.1.0, != 5.2.3.rc1, != 5.2.3)
       railties (>= 4.2.7, < 6.1.0, != 5.2.3.rc1, != 5.2.3)
       rake (>= 10.0)
-    thor (1.0.1)
+    thor (1.1.0)
     thread_safe (0.3.6)
-    tzinfo (1.2.8)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
-    zeitwerk (2.4.1)
+    zeitwerk (2.4.2)
 
 PLATFORMS
   ruby