diff --git a/Gemfile.lock b/Gemfile.lock
index a522258..fb6203f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,8 +8,9 @@ GEM
   remote: https://rubygems.org/
   specs:
     byebug (11.1.3)
-    codecov (0.6.0)
-      simplecov (>= 0.15, < 0.22)
+    codecov (0.2.12)
+      json
+      simplecov
     connection_pool (2.4.1)
     diff-lcs (1.5.0)
     docile (1.4.0)
@@ -18,6 +19,7 @@ GEM
       ruby2_keywords (>= 0.0.4)
     faraday-net_http (3.0.2)
     faraday-rack (1.0.0)
+    json (2.6.3)
     rack (3.0.8)
     rack-test (2.1.0)
       rack (>= 1.3)
@@ -39,7 +41,7 @@ GEM
       rspec-support (~> 3.12.0)
     rspec-support (3.12.0)
     ruby2_keywords (0.0.5)
-    simplecov (0.21.2)
+    simplecov (0.22.0)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
       simplecov_json_formatter (~> 0.1)