diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d85fb79..1448226 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby-version: [ '3.1' ]
+        ruby-version: [ '3.3.5' ]
 
     steps:
       - uses: actions/checkout@v2
diff --git a/.rubocop.yml b/.rubocop.yml
index 2371fde..11bc70a 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -3,7 +3,7 @@ inherit_from: .rubocop_todo.yml
 
 AllCops:
   # Matches the minimum version in .travis.yml
-  TargetRubyVersion: 2.4
+  TargetRubyVersion: 3.3
 
 Style/StringLiterals:
   EnforcedStyle: "double_quotes"
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index ffc87b8..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,26 +0,0 @@
-language: ruby
-
-rvm:
-  - 2.5
-  - 2.6
-  - 2.7
-  - ruby-head
-
-gemfile:
-  - Gemfile
-
-branches:
-  only:
-    - master
-    - gocardless
-
-before_install: gem update bundler
-script:
-  - bundle exec rake test
-  - bundle exec rubocop
-
-sudo: false
-
-matrix:
-  allow_failures:
-    - rvm: ruby-head