diff --git a/Gemfile.lock b/Gemfile.lock
index a8f54d9..554cce6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -52,7 +52,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     concurrent-ruby (1.0.5)
-    crass (1.0.2)
+    crass (1.0.6)
     debug_inspector (0.0.3)
     dynamic_form (1.1.4)
     erubis (2.7.0)
@@ -75,7 +75,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    loofah (2.1.1)
+    loofah (2.18.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)
@@ -83,18 +83,22 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (0.1.4)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.8.0)
     minitest (5.10.3)
-    nokogiri (1.8.1)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     paperclip (5.1.0)
       activemodel (>= 4.2.0)
       activesupport (>= 4.2.0)
       cocaine (~> 0.5.5)
       mime-types
       mimemagic (~> 0.3.0)
+    racc (1.6.0)
     rack (1.6.8)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -115,8 +119,8 @@ GEM
       activesupport (>= 4.2.0.beta, < 5.0)
       nokogiri (~> 1.6)
       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 (4.2.8)
       actionpack (= 4.2.8)
       activesupport (= 4.2.8)