diff --git a/Gemfile.lock b/Gemfile.lock
index af05d72..6e727b7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -87,7 +87,7 @@ GEM
     hashdiff (1.0.1)
     i18n (1.8.10)
       concurrent-ruby (~> 1.0)
-    loofah (2.11.0)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)