diff --git a/Gemfile.lock b/Gemfile.lock
index 6aad334..9e21a98 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -63,6 +63,7 @@ GEM
     chartkick (2.0.2)
     concurrent-ruby (1.0.5)
     connection_pool (2.2.1)
+    crass (1.0.6)
     dotenv (2.2.1)
     dotenv-rails (2.2.1)
       dotenv (= 2.2.1)
@@ -90,7 +91,8 @@ GEM
     listen (3.0.8)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
-    loofah (2.0.3)
+    loofah (2.19.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.5)
       mime-types (>= 1.16, < 4)