diff --git a/Ruby/Gemfile.lock b/Ruby/Gemfile.lock
index efc6e7c..ecbd1ec 100644
--- a/Ruby/Gemfile.lock
+++ b/Ruby/Gemfile.lock
@@ -72,7 +72,7 @@ GEM
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     json (1.8.6)
-    loofah (2.6.0)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)