diff --git a/Gemfile.lock b/Gemfile.lock
index f53794e..6257bfa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -92,7 +92,7 @@ GEM
     jquery-ui-rails (6.0.1)
       railties (>= 3.2.16)
     json (1.8.6)
-    loofah (2.14.0)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -106,7 +106,7 @@ GEM
       minitest (>= 5.0)
       ruby-progressbar
     multi_json (1.11.3)
-    nokogiri (1.13.3)
+    nokogiri (1.13.10)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     parser (2.3.0.7)
@@ -115,7 +115,7 @@ GEM
     polyamorous (1.3.0)
       activerecord (>= 3.0)
     powerpack (0.1.1)
-    racc (1.6.0)
+    racc (1.6.1)
     rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -136,8 +136,8 @@ GEM
       activesupport (>= 4.2.0, < 5.0)
       nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.4.2)
-      loofah (~> 2.3)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     railties (4.2.11.3)
       actionpack (= 4.2.11.3)
       activesupport (= 4.2.11.3)