diff --git a/Gemfile.lock b/Gemfile.lock
index a504c05..02558eb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -52,7 +52,7 @@ GEM
       validatable (~> 1.6)
     builder (3.2.3)
     concurrent-ruby (1.0.5)
-    crass (1.0.4)
+    crass (1.0.5)
     diff-lcs (1.3)
     docopt (0.5.0)
     erubi (1.7.1)
@@ -65,18 +65,18 @@ GEM
       activesupport (>= 4.2.0)
     i18n (1.0.1)
       concurrent-ruby (~> 1.0)
-    loofah (2.2.2)
+    loofah (2.3.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)
       mini_mime (>= 0.1.1)
     method_source (0.9.0)
     mini_mime (1.0.0)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.4.0)
     minitest (5.11.3)
     nio4r (2.3.1)
-    nokogiri (1.8.4)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.10.5)
+      mini_portile2 (~> 2.4.0)
     rack (2.0.5)
     rack-test (1.0.0)
       rack (>= 1.0, < 3)