diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index df2d2aa..6a4e47e 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -32,7 +32,5 @@ jobs:
       - name: Run tests
         run: bundle exec rake
         shell: bash
-      - name: Upload Test Coverage
-        uses: codecov/codecov-action@v3
-        with:
-          directory: ./coverage
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
diff --git a/Gemfile b/Gemfile
index 50e0590..4be3a64 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,8 @@
 
 source 'https://rubygems.org'
 
-gem 'codecov', require: false, group: 'test'
 gem 'rake'
 gem 'rubocop'
+gem 'simplecov', require: false, group: 'test'
+gem 'simplecov-cobertura', require: false, group: 'test'
 gem 'test-unit', '3.4.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index ae67542..568f170 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,8 +2,6 @@ GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.2)
-    codecov (0.6.0)
-      simplecov (>= 0.15, < 0.22)
     docile (1.4.0)
     json (2.7.1)
     language_server-protocol (3.17.0.3)
@@ -35,6 +33,9 @@ GEM
       docile (~> 1.1)
       simplecov-html (~> 0.11)
       simplecov_json_formatter (~> 0.1)
+    simplecov-cobertura (2.1.0)
+      rexml
+      simplecov (~> 0.19)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
     test-unit (3.4.0)
@@ -49,9 +50,10 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
-  codecov
   rake
   rubocop
+  simplecov
+  simplecov-cobertura
   test-unit (= 3.4.0)
 
 BUNDLED WITH
diff --git a/tests/helper.rb b/tests/helper.rb
index f01470c..ed68dcb 100644
--- a/tests/helper.rb
+++ b/tests/helper.rb
@@ -25,8 +25,8 @@ def disable_stderr
 end
 
 if ENV['CI'] == 'true'
-  require 'codecov'
-  SimpleCov.formatter = SimpleCov::Formatter::Codecov
+  require 'simplecov-cobertura'
+  SimpleCov.formatter = SimpleCov::Formatter::CoberturaFormatter
 else
   SimpleCov.formatter = SimpleCov::Formatter::HTMLFormatter
 end