diff --git a/Gemfile.lock b/Gemfile.lock
index 494d25ce..b43051bb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -257,10 +257,12 @@ GEM
       sprockets (> 3.0)
       sprockets-rails
       tilt
-    simplecov (0.19.1)
+    simplecov (0.20.0)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.2)
     solargraph (0.39.17)
       backport (~> 1.1)
       benchmark