diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index db0a109..df77b24 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,11 +12,15 @@ on:
 
 jobs:
   test:
-
     strategy:
       matrix:
         os: [ubuntu-latest]
-        ruby-version: [2.6, 2.7, '3.0', 3.1, 3.2]
+        ruby-version:
+          - "2.7"
+          - "3.0"
+          - "3.1"
+          - "3.2"
+          - "3.3"
 
     runs-on: ${{ matrix.os }}
 
diff --git a/.standard.yml b/.standard.yml
index 8825305..2054e90 100644
--- a/.standard.yml
+++ b/.standard.yml
@@ -1,3 +1,3 @@
 # For available configuration options, see:
 #   https://github.com/standardrb/standard
-ruby_version: 2.6
+ruby_version: 2.7
diff --git a/lint_roller.gemspec b/lint_roller.gemspec
index d754248..36408fb 100644
--- a/lint_roller.gemspec
+++ b/lint_roller.gemspec
@@ -9,7 +9,7 @@ Gem::Specification.new do |spec|
   spec.summary = "A plugin specification for linter and formatter rulesets"
   spec.homepage = "https://github.com/standardrb/lint_roller"
   spec.license = "MIT"
-  spec.required_ruby_version = ">= 2.6.0"
+  spec.required_ruby_version = ">= 2.7.0"
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage