diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index dca97ba..d6378a6 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ['2.7', '3.0', '3.1', '3.2', 'jruby-9.4']
+        ruby: ['3.0', '3.1', '3.2', '3.3', 'jruby-9.4']
     env:
       BUNDLE_WITHOUT: optional
     steps:
diff --git a/.ruby-version b/.ruby-version
index 1f7da99..818bd47 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.7.7
+3.0.6
diff --git a/.tool-versions b/.tool-versions
index c879b08..acea6c1 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
 java adoptopenjdk-18.0.1+10
-ruby 2.7.7
+ruby 3.0.6