diff --git a/Gemfile.lock b/Gemfile.lock
index ce853e0..d397b8f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -46,6 +46,7 @@ GEM
     builder (3.2.2)
     byebug (9.0.5)
     concurrent-ruby (1.0.2)
+    crass (1.0.6)
     debug_inspector (0.0.2)
     devise (4.2.0)
       bcrypt (~> 3.0)
@@ -66,7 +67,8 @@ GEM
       thor (>= 0.14, < 2.0)
     json (1.8.3)
     jwt (1.5.4)
-    loofah (2.0.3)
+    loofah (2.18.0)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.4)
       mime-types (>= 1.16, < 4)
@@ -77,11 +79,9 @@ GEM
     minitest (5.9.0)
     multi_json (1.12.1)
     mysql2 (0.4.10)
-    nokogiri (1.6.8)
+    nokogiri (1.6.8.1)
       mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
     orm_adapter (0.5.0)
-    pkg-config (1.1.7)
     puma (3.4.0)
     rack (1.6.4)
     rack-cors (0.4.0)
@@ -104,8 +104,8 @@ 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 (1.4.3)
+      loofah (~> 2.3)
     railties (4.2.6)
       actionpack (= 4.2.6)
       activesupport (= 4.2.6)