diff --git a/Gemfile.lock b/Gemfile.lock
index 5d1f71ab31b..c11911ac67f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -213,7 +213,7 @@ GEM
     logstash-logger (0.26.1)
       logstash-event (~> 1.2)
     logster (2.12.2)
-    loofah (2.19.1)
+    loofah (2.20.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     lru_redux (1.1.0)