diff --git a/.github/workflows/rspec.yml b/.github/workflows/rspec.yml
index d98b694..8341bbd 100644
--- a/.github/workflows/rspec.yml
+++ b/.github/workflows/rspec.yml
@@ -21,7 +21,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["3.1", "3.2", "3.3", "3.4", "4.0"]
+        ruby: ["4.0", "head"]
 
     steps:
       - name: Harden the runner (Audit all outbound calls)
diff --git a/.rubocop.yml b/.rubocop.yml
index 18c633d..70644d5 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -7,7 +7,7 @@ plugins:
   - rubocop-rspec
 
 AllCops:
-  TargetRubyVersion: 3.1
+  TargetRubyVersion: 4.0
   NewCops: enable
 
 # We use standard as a linter and formatter instead Rubocop.
diff --git a/.standard.yml b/.standard.yml
index 72b2693..323fdc2 100644
--- a/.standard.yml
+++ b/.standard.yml
@@ -1 +1 @@
-ruby_version: 3.1
+ruby_version: 4.0
diff --git a/errbit_plugin.gemspec b/errbit_plugin.gemspec
index 448ce5f..a7cc0af 100644
--- a/errbit_plugin.gemspec
+++ b/errbit_plugin.gemspec
@@ -12,7 +12,7 @@ Gem::Specification.new do |spec|
   spec.description = "Base to create an errbit plugin"
   spec.homepage = "https://github.com/errbit/errbit_plugin"
   spec.license = "MIT"
-  spec.required_ruby_version = ">= 3.1.0"
+  spec.required_ruby_version = ">= 4.0.0"
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = spec.homepage