diff --git a/Gemfile.lock b/Gemfile.lock
index 0997d31..4b2efa0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -115,7 +115,6 @@ GEM
       irb (~> 1.10)
       reline (>= 0.3.8)
     diff-lcs (1.6.2)
-    docile (1.4.1)
     dotenv (3.2.0)
     dotenv-rails (3.2.0)
       dotenv (= 3.2.0)
@@ -315,12 +314,7 @@ GEM
     ruby-next-core (1.2.0)
     ruby-progressbar (1.13.0)
     securerandom (0.4.1)
-    simplecov (0.22.0)
-      docile (~> 1.1)
-      simplecov-html (~> 0.11)
-      simplecov_json_formatter (~> 0.1)
-    simplecov-html (0.13.2)
-    simplecov_json_formatter (0.1.4)
+    simplecov (1.0.1)
     simpleidn (0.2.3)
     solid_cable (4.0.0)
       actioncable (>= 7.2)