diff --git a/.github/workflows/linters.yml b/.github/workflows/linters.yml
index f8cd086..b53356d 100644
--- a/.github/workflows/linters.yml
+++ b/.github/workflows/linters.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: ['2.6', '2.7', '3.0', '3.1']
+        ruby: ['2.7', '3.0', '3.1']
     name: Chefstyle on Ruby ${{ matrix.ruby }}
     steps:
       - uses: actions/checkout@v2
diff --git a/.github/workflows/unit.yml b/.github/workflows/unit.yml
index 6d699d3..a8890c5 100644
--- a/.github/workflows/unit.yml
+++ b/.github/workflows/unit.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: ['2.6', '2.7', '3.0', '3.1']
+        ruby: ['2.7', '3.0', '3.1']
     name: Unit test on Ruby ${{ matrix.ruby }}
     steps:
       - uses: actions/checkout@v2
diff --git a/kitchen-vagrant.gemspec b/kitchen-vagrant.gemspec
index 5c87d2b..571aa1c 100644
--- a/kitchen-vagrant.gemspec
+++ b/kitchen-vagrant.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |gem|
   gem.files         = `git ls-files`.split($INPUT_RECORD_SEPARATOR).grep(/LICENSE|^lib|^support|^templates/)
   gem.require_paths = ["lib"]
 
-  gem.required_ruby_version = ">= 2.6"
+  gem.required_ruby_version = ">= 2.7"
 
   gem.add_dependency "test-kitchen", ">= 1.4", "< 4"
 end