diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e67a4b1..2d214c4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,6 +13,8 @@ name: ci
   pull_request:
     branches:
       - main
+  schedule:
+    - cron: "30 4 * * *"
   create:
 
 jobs:
@@ -22,10 +24,16 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
+          - "3.1"
           - "3.0"
-          - "2.7"
-          - "2.6"
     steps:
+      - uses: ravsamhq/notify-slack-action@v1
+        if: always()
+        with:
+          status: ${{ job.status }}
+          notify_when: "failure"
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
       - uses: actions/checkout@v1
       - name: Install package dependencies
         run: "[ -e $APT_DEPS ] || sudo apt-get install -y --no-install-recommends $APT_DEPS"
diff --git a/README.md b/README.md
index 16ceee3..5990c30 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ Data validation library for Ruby
 
 ## Rubies
 
-__Hanami::Validations__ supports Ruby (MRI) 2.6+
+__Hanami::Validations__ supports Ruby (MRI) 3.0+
 
 ## Installation
 
diff --git a/hanami-validations.gemspec b/hanami-validations.gemspec
index 031351e..f5de36a 100644
--- a/hanami-validations.gemspec
+++ b/hanami-validations.gemspec
@@ -18,12 +18,13 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
-  spec.required_ruby_version = ">= 2.6.0"
+  spec.metadata["rubygems_mfa_required"] = "true"
+  spec.required_ruby_version = ">= 3.0"
 
   spec.add_dependency "dry-validation", "~> 1.6"
 
   spec.add_development_dependency "bundler", ">= 1.6", "< 3"
   spec.add_development_dependency "rake",    "~> 13"
   spec.add_development_dependency "rspec",   "~> 3.9"
-  spec.add_development_dependency "rubocop", "0.91"
+  spec.add_development_dependency "rubocop", "~> 1.0"
 end