diff --git a/Gemfile.lock b/Gemfile.lock
index 95ebbd3..58668b8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -95,7 +95,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     concurrent-ruby (1.1.4)
-    crass (1.0.4)
+    crass (1.0.5)
     domain_name (0.5.20180417)
       unf (>= 0.0.5, < 1.0.0)
     erubi (1.8.0)
@@ -129,7 +129,7 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.2.3)
+    loofah (2.4.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)