diff --git a/Gemfile b/Gemfile
index 03dc23e..e15b6d6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -14,7 +14,7 @@ group :development, :test do
   gem "debug"
   gem "minitest", "~> 6.0"
   gem "standard", "~> 1.54"
-  gem "simplecov", "~> 0.22"
+  gem "simplecov", "~> 1.0"
   gem "simplecov-lcov", "~> 0.8"
   gem "steep", "~> 2.0"
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 1116692..daafb56 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,6 @@ GEM
     debug (1.11.1)
       irb (~> 1.10)
       reline (>= 0.3.8)
-    docile (1.4.1)
     drb (2.2.3)
     erb (6.0.4)
     ffi (1.17.4)
@@ -86,13 +85,8 @@ GEM
       rubocop-ast (>= 1.47.1, < 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 (1.0.2)
     simplecov-lcov (0.9.0)
-    simplecov_json_formatter (0.1.4)
     standard (1.54.0)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.0)
@@ -141,7 +135,7 @@ DEPENDENCIES
   minitest (~> 6.0)
   prism (~> 1.9)
   rake (~> 13.4)
-  simplecov (~> 0.22)
+  simplecov (~> 1.0)
   simplecov-lcov (~> 0.8)
   standard (~> 1.54)
   steep (~> 2.0)