diff --git a/Gemfile b/Gemfile
index 7b959df..811d488 100644
--- a/Gemfile
+++ b/Gemfile
@@ -58,6 +58,6 @@ group :development, :test do
   gem "rake"
 
   # unit tests
-  gem "rspec", "~> 3.6.0"
-  gem "rspec-rails", "~> 3.6.0"
+  gem "rspec", "~> 3.7.0"
+  gem "rspec-rails", "~> 3.7.0"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 6f41f72..50b4960 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -46,9 +46,10 @@ GEM
     concurrent-ruby (1.0.5)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
+    crass (1.0.3)
     diff-lcs (1.3)
     docile (1.1.5)
-    erubi (1.6.1)
+    erubi (1.7.0)
     ethon (0.10.1)
       ffi (>= 1.3.0)
     fabrication (2.16.3)
@@ -84,7 +85,8 @@ GEM
     hashdiff (0.3.6)
     httparty (0.15.6)
       multi_xml (>= 0.5.2)
-    i18n (0.8.6)
+    i18n (0.9.1)
+      concurrent-ruby (~> 1.0)
     json (2.1.0)
     json-schema (2.8.0)
       addressable (>= 2.4)
@@ -95,14 +97,15 @@ GEM
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.0.3)
+    loofah (2.1.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     lumberjack (1.0.12)
     macaddr (1.7.1)
       systemu (~> 2.6.2)
     method_source (0.9.0)
     mini_portile2 (2.3.0)
-    minitest (5.10.3)
+    minitest (5.11.1)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
     nenv (0.3.0)
@@ -137,7 +140,7 @@ GEM
       pry (~> 0.10)
     public_suffix (3.0.0)
     rack (2.0.3)
-    rack-test (0.7.0)
+    rack-test (0.8.2)
       rack (>= 1.0, < 3)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
@@ -156,30 +159,30 @@ GEM
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
-    rspec (3.6.0)
-      rspec-core (~> 3.6.0)
-      rspec-expectations (~> 3.6.0)
-      rspec-mocks (~> 3.6.0)
+    rspec (3.7.0)
+      rspec-core (~> 3.7.0)
+      rspec-expectations (~> 3.7.0)
+      rspec-mocks (~> 3.7.0)
     rspec-collection_matchers (1.1.3)
       rspec-expectations (>= 2.99.0.beta1)
-    rspec-core (3.6.0)
-      rspec-support (~> 3.6.0)
-    rspec-expectations (3.6.0)
+    rspec-core (3.7.1)
+      rspec-support (~> 3.7.0)
+    rspec-expectations (3.7.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.6.0)
+      rspec-support (~> 3.7.0)
     rspec-json_expectations (2.1.0)
-    rspec-mocks (3.6.0)
+    rspec-mocks (3.7.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.6.0)
-    rspec-rails (3.6.1)
+      rspec-support (~> 3.7.0)
+    rspec-rails (3.7.2)
       actionpack (>= 3.0)
       activesupport (>= 3.0)
       railties (>= 3.0)
-      rspec-core (~> 3.6.0)
-      rspec-expectations (~> 3.6.0)
-      rspec-mocks (~> 3.6.0)
-      rspec-support (~> 3.6.0)
-    rspec-support (3.6.0)
+      rspec-core (~> 3.7.0)
+      rspec-expectations (~> 3.7.0)
+      rspec-mocks (~> 3.7.0)
+      rspec-support (~> 3.7.0)
+    rspec-support (3.7.0)
     rubocop (0.50.0)
       parallel (~> 1.10)
       parser (>= 2.3.3.1, < 3.0)
@@ -216,7 +219,7 @@ GEM
     thread_safe (0.3.6)
     typhoeus (1.3.0)
       ethon (>= 0.9.0)
-    tzinfo (1.2.3)
+    tzinfo (1.2.4)
       thread_safe (~> 0.1)
     unicode-display_width (1.3.0)
     uuid (2.3.8)
@@ -246,10 +249,10 @@ DEPENDENCIES
   pry
   pry-byebug
   rake
-  rspec (~> 3.6.0)
+  rspec (~> 3.7.0)
   rspec-collection_matchers (~> 1.1.2)
   rspec-json_expectations (~> 2.1)
-  rspec-rails (~> 3.6.0)
+  rspec-rails (~> 3.7.0)
   rubocop (= 0.50.0)
   simplecov (= 0.15.1)
   simplecov-rcov (= 0.2.3)