diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 9107682..c48022d 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -19,7 +19,7 @@ jobs:
 
     strategy:
       matrix:
-        ruby: ["2.7", "3.0", "3.1", "3.2"]
+        ruby: ["3.0", "3.1", "3.2", "3.3"]
 
     steps:
       - uses: actions/checkout@v4
diff --git a/.rubocop.yml b/.rubocop.yml
index cd9d7d5..541d4b9 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -10,7 +10,7 @@ require:
 
 AllCops:
   NewCops: enable
-  TargetRubyVersion: 2.7
+  TargetRubyVersion: 3.0
 
 # Put development dependencies in the gemspec so rubygems.org knows about them
 Gemspec/DevelopmentDependencies:
diff --git a/gir_ffi-gtk.gemspec b/gir_ffi-gtk.gemspec
index 4aa50bc..e5545cb 100644
--- a/gir_ffi-gtk.gemspec
+++ b/gir_ffi-gtk.gemspec
@@ -12,7 +12,7 @@ Gem::Specification.new do |spec|
   spec.description = "Bindings for Gtk+ 2 and 3, generated by GirFFI, with overrides."
   spec.homepage = "http://www.github.com/mvz/gir_ffi-gtk"
   spec.license = "LGPL-2.1+"
-  spec.required_ruby_version = ">= 2.7.0"
+  spec.required_ruby_version = ">= 3.0.0"
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = "https://github.com/mvz/gir_ffi-gtk"