diff --git a/Gemfile.lock b/Gemfile.lock
index 9689e73..5895f06 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,7 +60,7 @@ GEM
       rack-test (>= 0.6.3)
       regexp_parser (~> 1.5)
       xpath (~> 3.2)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.1.7)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     crass (1.0.4)
@@ -84,7 +84,7 @@ GEM
     globalid (0.4.2)
       activesupport (>= 4.2.0)
     hashdiff (0.4.0)
-    i18n (1.6.0)
+    i18n (1.8.5)
       concurrent-ruby (~> 1.0)
     jaro_winkler (1.5.2)
     jbuilder (2.9.1)
@@ -106,7 +106,7 @@ GEM
     mini_magick (4.9.3)
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
-    minitest (5.11.3)
+    minitest (5.14.1)
     msgpack (1.2.10)
     multipart-post (2.1.0)
     nio4r (2.3.1)
@@ -189,8 +189,7 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    spring (2.0.2)
-      activesupport (>= 4.2)
+    spring (2.1.1)
     spring-watcher-listen (2.0.1)
       listen (>= 2.7, < 4.0)
       spring (>= 1.2, < 3.0)
@@ -204,7 +203,7 @@ GEM
     thor (0.20.3)
     thread_safe (0.3.6)
     timecop (0.9.1)
-    tzinfo (1.2.5)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
     unicode-display_width (1.6.0)
     web-console (3.7.0)