diff --git a/Gemfile.lock b/Gemfile.lock
index 448d4c2d490..f6640ad85b3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -159,7 +159,7 @@ GEM
     logstash-logger (0.25.1)
       logstash-event (~> 1.2)
     logster (1.2.9)
-    loofah (2.1.1)
+    loofah (2.2.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     lru_redux (1.1.0)