diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
index 47724d0f5f..ba30184799 100644
--- a/.buildkite/pipeline.yml
+++ b/.buildkite/pipeline.yml
@@ -5,6 +5,7 @@ steps:
     matrix:
       setup:
         ruby:
+          - "3.4"
           - "3.3"
           - "3.2"
           - "3.1"
@@ -19,11 +20,11 @@ steps:
             transport: "8.3"
         # Test for different versions of transport
         - with:
-            ruby: "3.3"
+            ruby: "3.4"
             ruby_source: "ruby"
             transport: "main"
         - with:
-            ruby: "3.3"
+            ruby: "3.4"
             ruby_source: "ruby"
             transport: "8.2"
     env:
diff --git a/.github/workflows/license.yml b/.github/workflows/license.yml
index 8816ff40dd..e556b833ee 100644
--- a/.github/workflows/license.yml
+++ b/.github/workflows/license.yml
@@ -7,7 +7,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
-        ruby-version: '3.3'
+        ruby-version: '3.4'
     - name: Check license headers
       run: |
         ruby ./.github/check_license_headers.rb
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 313a20892e..e2c29dc2d2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ['3.1', '3.2', '3.3', 'jruby-9.3', 'jruby-9.4']
+        ruby: ['3.1', '3.2', '3.3', '3.4', 'jruby-9.3', 'jruby-9.4']
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
diff --git a/.github/workflows/otel.yml b/.github/workflows/otel.yml
index 238305e750..c78dea09d9 100644
--- a/.github/workflows/otel.yml
+++ b/.github/workflows/otel.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ '3.3', 'jruby-9.4' ]
+        ruby: ['3.4', 'jruby-9.4']
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4