diff --git a/Gemfile b/Gemfile
index a7f66cc..c64d093 100644
--- a/Gemfile
+++ b/Gemfile
@@ -21,7 +21,7 @@ group :test do
   gem "factory_girl_rails"
   gem "capybara", "~> 2.4.0"
   gem "capybara-screenshot"
-  gem "simplecov", "~> 0.7.1", require: false
+  gem "simplecov", "~> 0.16.1", require: false
   gem "webmock", "~> 1.18.0"
   gem "timecop"
   gem "poltergeist"
diff --git a/Gemfile.lock b/Gemfile.lock
index 63beffe..569490c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -89,6 +89,7 @@ GEM
     crass (1.0.4)
     debug_inspector (0.0.2)
     diff-lcs (1.3)
+    docile (1.3.0)
     domain_name (0.5.20170404)
       unf (>= 0.0.5, < 1.0.0)
     draper (1.4.0)
@@ -241,10 +242,11 @@ GEM
       sprockets-rails (~> 2.0)
     settingslogic (2.0.9)
     sigdump (0.2.4)
-    simplecov (0.7.1)
-      multi_json (~> 1.0)
-      simplecov-html (~> 0.7.1)
-    simplecov-html (0.7.1)
+    simplecov (0.16.1)
+      docile (~> 1.1)
+      json (>= 1.8, < 3)
+      simplecov-html (~> 0.10.0)
+    simplecov-html (0.10.2)
     slop (3.6.0)
     sprockets (2.12.4)
       hike (~> 1.2)
@@ -301,7 +303,7 @@ DEPENDENCIES
   pry-rails
   rake
   rspec-rails (~> 3.0)
-  simplecov (~> 0.7.1)
+  simplecov (~> 0.16.1)
   timecop
   web-console (~> 2.0)
   webmock (~> 1.18.0)