diff --git a/lessonThree/app/Gemfile.lock b/lessonThree/app/Gemfile.lock
index 889c35b..7f5fdfa 100644
--- a/lessonThree/app/Gemfile.lock
+++ b/lessonThree/app/Gemfile.lock
@@ -278,7 +278,7 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.3.1)
+    loofah (2.4.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)