diff --git a/Gemfile.lock b/Gemfile.lock
index 2b50e3f2..67df2950 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -54,6 +54,7 @@ GEM
       term-ansicolor (~> 1.3)
       thor (~> 0.19.1)
       tins (~> 1.6.0)
+    crass (1.0.6)
     devise (4.2.0)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
@@ -74,7 +75,8 @@ GEM
       activesupport (>= 4.1.0)
     i18n (0.7.0)
     json (1.8.3)
-    loofah (2.0.3)
+    loofah (2.19.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.4)
       mime-types (>= 1.16, < 4)
@@ -83,13 +85,11 @@ GEM
     mime-types-data (3.2016.0521)
     mini_portile2 (2.1.0)
     minitest (5.9.0)
-    nokogiri (1.6.8)
+    nokogiri (1.6.8.1)
       mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
     orm_adapter (0.5.0)
     parser (2.3.1.2)
       ast (~> 2.2)
-    pkg-config (1.1.7)
     powerpack (0.1.1)
     rack (1.6.4)
     rack-test (0.6.3)
@@ -111,8 +111,8 @@ GEM
       activesupport (>= 4.2.0.beta, < 5.0)
       nokogiri (~> 1.6.0)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.4.4)
+      loofah (~> 2.19, >= 2.19.1)
     rails_email_validator (0.1.4)
       activemodel (>= 3.0.0)
     railties (4.2.6)