diff --git a/Gemfile.lock b/Gemfile.lock
index bc4d50e..a5e73bd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -59,6 +59,7 @@ GEM
     concurrent-ruby (1.0.5)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
+    crass (1.0.5)
     docile (1.1.5)
     erubi (1.6.1)
     faraday (0.14.0)
@@ -68,7 +69,8 @@ GEM
     hashdiff (0.3.7)
     i18n (0.8.4)
     json (2.1.0)
-    loofah (2.0.3)
+    loofah (2.3.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)
       mini_mime (>= 0.1.1)
@@ -86,7 +88,7 @@ GEM
       ruby-progressbar
     multipart-post (2.0.0)
     nio4r (2.2.0)
-    nokogiri (1.8.2)
+    nokogiri (1.8.5)
       mini_portile2 (~> 2.3.0)
     parallel (1.12.1)
     parser (2.5.0.2)