diff --git a/Gemfile.lock b/Gemfile.lock
index 28c25a7..64ad397 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -111,7 +111,7 @@ GEM
     concurrent-ruby (1.1.5)
     connection_pool (2.2.2)
     cppjieba_rb (0.3.3)
-    crass (1.0.4)
+    crass (1.0.6)
     declarative (0.0.10)
     declarative-option (0.1.0)
     digest-crc (0.4.1)
@@ -195,7 +195,7 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
     local_time (2.1.0)
-    loofah (2.2.3)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -255,8 +255,8 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.2.0)
-      loofah (~> 2.2, >= 2.2.2)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     rails-i18n (6.0.0)
       i18n (>= 0.7, < 2)
       railties (>= 6.0.0, < 7)