diff --git a/.github/workflows/development.yml b/.github/workflows/development.yml
index 757c016..cfb7d27 100644
--- a/.github/workflows/development.yml
+++ b/.github/workflows/development.yml
@@ -23,7 +23,7 @@ jobs:
         ruby-version: ${{matrix.ruby}}
         bundler-cache: true
     
-    - uses: kurocha/setup-cpp@master
+    - uses: kurocha/setup-cpp@v1
     
     - name: Run tests
       timeout-minutes: 5
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 717b63c..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,23 +0,0 @@
-# Setup the environment:
-dist: xenial
-
-addons:
-  apt:
-    sources:
-      - ubuntu-toolchain-r-test
-    packages:
-      - libc++-dev
-
-matrix:
-  include:
-    - compiler: clang
-    - compiler: gcc
-      env: TARGETS="compiler-gcc"
-
-install:
-  - gem install teapot
-
-# Run tests:
-script:
-  - teapot fetch
-  - teapot build Test/Geometry $TARGETS