diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b8437e0..dd6ae32 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ jobs:
       fail-fast: false
       matrix:
         # Due to https://github.com/actions/runner/issues/849, we have to use quotes for '3.0'
-        ruby: [2.7, '3.0', 3.1, 3.2]
+        ruby: ['3.0', 3.1, 3.2]
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
diff --git a/.ruby-version b/.ruby-version
index 49cdd66..eca690e 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.7.6
+3.0.5
diff --git a/CHANGELOG.md b/CHANGELOG.md
index dfa9c69..76dc96e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@
   useful summary for people upgrading their application, not a replication
   of the commit log.
 
+## Unreleased
+
+* Drop support for Ruby 2.7.
+
 ## 3.0.1
 
 * Resolve Selenium deprecation warning on options argument by requiring higher minimum versions ([#44](https://github.com/alphagov/govuk_test/pull/44))
diff --git a/govuk_test.gemspec b/govuk_test.gemspec
index bcbe9a9..2603e35 100644
--- a/govuk_test.gemspec
+++ b/govuk_test.gemspec
@@ -12,6 +12,7 @@ Gem::Specification.new do |spec|
   spec.description   = %q{Test configuration and dependencies for applications on GOV.UK}
   spec.homepage      = "https://github.com/alphagov/govuk_test"
   spec.license       = "MIT"
+  spec.required_ruby_version = ">= 3.0"
 
   # Specify which files should be added to the gem when it is released.
   # The `git ls-files -z` loads the files in the RubyGem that have been added into git.