diff --git a/Gemfile.lock b/Gemfile.lock
index 268829a..9da996e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -50,8 +50,9 @@ GEM
     erubis (2.7.0)
     globalid (0.4.0)
       activesupport (>= 4.2.0)
-    i18n (0.7.0)
-    json (1.8.2)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    json (1.8.6)
     loofah (2.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.6)
@@ -60,7 +61,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
     mini_portile (0.6.2)
-    minitest (5.6.1)
+    minitest (5.14.1)
     nokogiri (1.6.6.2)
       mini_portile (~> 0.6.0)
     pg (0.18.2)
@@ -109,12 +110,12 @@ GEM
       rspec-mocks (~> 3.2.0)
       rspec-support (~> 3.2.0)
     rspec-support (3.2.2)
-    shoulda (3.5.0)
-      shoulda-context (~> 1.0, >= 1.0.1)
-      shoulda-matchers (>= 1.4.1, < 3.0)
-    shoulda-context (1.2.1)
-    shoulda-matchers (2.8.0)
-      activesupport (>= 3.0.0)
+    shoulda (4.0.0)
+      shoulda-context (~> 2.0)
+      shoulda-matchers (~> 4.0)
+    shoulda-context (2.0.0)
+    shoulda-matchers (4.3.0)
+      activesupport (>= 4.2.0)
     sprockets (3.7.1)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
@@ -123,8 +124,8 @@ GEM
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
     thor (0.19.1)
-    thread_safe (0.3.5)
-    tzinfo (1.2.2)
+    thread_safe (0.3.6)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
 
 PLATFORMS