diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 4843bf5605..7e2378c01b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -78,6 +78,27 @@ jobs:
       run: bundle exec rake
       shell: bash
 
+  build-ibm:
+    if: github.repository == 'ruby/prism'
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-24.04-ppc64le
+          - ubuntu-24.04-s390x
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Ruby
+      run: |
+        sudo apt-get update
+        sudo apt-get install ruby-full bundler libyaml-dev
+    - name: Install dependencies
+      run: sudo bundle install --jobs 2
+    - name: Run Ruby tests
+      run: bundle exec rake
+      shell: bash
+
   build-ffi:
     strategy:
       fail-fast: false
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index bcded51f4d..0000000000
--- a/.travis.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-language: ruby
-
-dist: jammy
-
-matrix:
-  include:
-    - arch: ppc64le
-    - arch: s390x
-  fast_finish: true
-
-before_install:
-  - sudo apt update -yq
-  - sudo apt -yq install gcc-11
-  - gcc-11 --version
-
-before_script:
-  # Enable the verbose option in mkmf.rb to print the compiling commands.
-  - export MAKEFLAGS="V=1 CC=gcc-11"
-
-notifications:
-  email:
-    recipients:
-      - jun.aruga@gmail.com
-    on_success: never
-    on_failure: always