diff --git a/Gemfile.lock b/Gemfile.lock
index c7c64534..f162718a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -91,7 +91,7 @@ GEM
       nokogiri (>= 1.6.0)
       ruby_parser (~> 3.5)
     http_parser.rb (0.6.0)
-    i18n (0.9.1)
+    i18n (0.9.3)
       concurrent-ruby (~> 1.0)
     jbuilder (2.7.0)
       activesupport (>= 4.2.0)
@@ -128,11 +128,11 @@ GEM
     method_source (0.9.0)
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
-    minitest (5.10.3)
+    minitest (5.11.3)
     multi_json (1.12.2)
     netaddr (1.5.1)
-    nio4r (2.1.0)
-    nokogiri (1.8.1)
+    nio4r (2.2.0)
+    nokogiri (1.8.2)
       mini_portile2 (~> 2.3.0)
     pathutil (0.16.1)
       forwardable-extended (~> 2.6)
@@ -142,7 +142,7 @@ GEM
       method_source (~> 0.9.0)
     public_suffix (3.0.1)
     puma (3.11.0)
-    rack (2.0.3)
+    rack (2.0.4)
     rack-test (0.8.2)
       rack (>= 1.0, < 3)
     rails (5.1.4)