diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 2df7893..6966a08 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,38 +4,6 @@ name: CI
 on: [push, pull_request]
 
 jobs:
-  test-ruby-2-4-x:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Setup Ruby 2.4
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 2.4
-      - name: Build and run tests
-        env:
-          BUNDLE_GEMFILE: "Gemfile-Ruby-2-4"
-        run: |
-          gem install bundler -v 2.3
-          bundle install --jobs 4 --retry 3
-          bundle exec rake
-
-  test-ruby-2-5-x:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Setup Ruby 2.5
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 2.5
-      - name: Build and run tests
-        env:
-          BUNDLE_GEMFILE: "Gemfile-Ruby-2-5"
-        run: |
-          gem install bundler -v 2.3.26
-          bundle install --jobs 4 --retry 3
-          bundle exec rake
-
   test-ruby:
     runs-on: ${{ matrix.os }}-latest
     strategy:
diff --git a/Gemfile-Ruby-2-4 b/Gemfile-Ruby-2-4
deleted file mode 100644
index 3b6deb4..0000000
--- a/Gemfile-Ruby-2-4
+++ /dev/null
@@ -1,13 +0,0 @@
-# frozen_string_literal: true
-
-source "https://rubygems.org"
-
-git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
-
-# Specify your gem's dependencies in skunk.gemspec
-gemspec
-
-gem "reek", "~> 6.0.0"
-gem "rubocop", "~> 1.0"
-gem "simplecov", "< 0.19.0"
-gem "vcr", "< 6.1.0"
diff --git a/Gemfile-Ruby-2-5 b/Gemfile-Ruby-2-5
deleted file mode 100644
index 3b6deb4..0000000
--- a/Gemfile-Ruby-2-5
+++ /dev/null
@@ -1,13 +0,0 @@
-# frozen_string_literal: true
-
-source "https://rubygems.org"
-
-git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
-
-# Specify your gem's dependencies in skunk.gemspec
-gemspec
-
-gem "reek", "~> 6.0.0"
-gem "rubocop", "~> 1.0"
-gem "simplecov", "< 0.19.0"
-gem "vcr", "< 6.1.0"