diff --git a/Gemfile.lock b/Gemfile.lock
index 2c33539..a539d43 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -39,7 +39,7 @@ GEM
     arel (6.0.4)
     builder (3.2.3)
     concurrent-ruby (1.0.5)
-    crass (1.0.4)
+    crass (1.0.6)
     domain_name (0.5.20180417)
       unf (>= 0.0.5, < 1.0.0)
     erubis (2.7.0)
@@ -60,7 +60,7 @@ GEM
       thor (>= 0.14, < 2.0)
     json (1.8.6)
     kgio (2.11.2)
-    loofah (2.2.2)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)
@@ -69,12 +69,12 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
     mini_mime (1.0.1)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.4.0)
     minitest (5.11.3)
     multi_json (1.13.1)
     netrc (0.11.0)
-    nokogiri (1.8.4)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.10.10)
+      mini_portile2 (~> 2.4.0)
     rack (1.6.10)
     rack-test (0.6.3)
       rack (>= 1.0)