diff --git a/Gemfile b/Gemfile
index 5c09305..6866324 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,7 +11,7 @@ gem "rake", "~> 13.0"
 gem "rspec", "~> 3.12"
 gem "rubocop", "~> 1.55"
 gem "sequel", "~> 5.71"
-gem "simplecov", "~> 0.21"
+gem "simplecov", "~> 0.22"
 gem "sinatra", "~> 3.0"
 gem "sqlite3", "~> 1.4"
 gem "webrick", "~> 1.8"
diff --git a/Gemfile.lock b/Gemfile.lock
index bba1154..d314701 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -57,12 +57,12 @@ GEM
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
     sequel (5.71.0)
-    simplecov (0.21.2)
+    simplecov (0.22.0)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
-    simplecov_json_formatter (0.1.3)
+    simplecov_json_formatter (0.1.4)
     sinatra (3.0.6)
       mustermann (~> 3.0)
       rack (~> 2.2, >= 2.2.4)
@@ -84,7 +84,7 @@ DEPENDENCIES
   rspec (~> 3.12)
   rubocop (~> 1.55)
   sequel (~> 5.71)
-  simplecov (~> 0.21)
+  simplecov (~> 0.22)
   sinatra (~> 3.0)
   sqlite3 (~> 1.4)
   webrick (~> 1.8)