diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index a83e42b..0000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,35 +0,0 @@
-version: 2.1
-workflows:
-  version: 2
-  test-and-build-image:
-    jobs:
-      - test
-      - build-image:
-          requires:
-            - test
-          filters:
-            branches:
-              only: master
-jobs:
-  test:
-    docker:
-      - image: haskell:8.8.1
-    steps:
-      - checkout
-      - restore_cache:
-          keys:
-            - libraries-{{ checksum "distance.cabal" }}
-            - libraries
-      - run: cabal update
-      - run: cabal test
-      - save_cache:
-          key: libraries-{{ checksum "distance.cabal" }}
-          paths:
-            - "~/.cabal"
-  build-image:
-    machine: true
-    steps:
-      - checkout
-      - run: echo $KSC_CI_PERSONAL_ACCESS_TOKEN | docker login docker.pkg.github.com --username ksc-ci --password-stdin
-      - run: docker build --tag docker.pkg.github.com/odt/distance/calculator:$CIRCLE_SHA1 .
-      - run: docker push docker.pkg.github.com/odt/distance/calculator:$CIRCLE_SHA1
diff --git a/.github/workflows/test-build-push.yml b/.github/workflows/test-build-push.yml
new file mode 100644
index 0000000..47b72a7
--- /dev/null
+++ b/.github/workflows/test-build-push.yml
@@ -0,0 +1,40 @@
+name: Test Build Push
+
+on: push
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: haskell/actions/setup@v2
+        with:
+          ghc-version: '8.8.1'
+      - run: cabal update
+      - run: cabal test
+  build-push:
+    runs-on: ubuntu-latest
+    needs: test
+    steps:
+      - name: Setup Docker buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to the Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        with:
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
diff --git a/README.md b/README.md
index 588d945..89c8641 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,5 @@
 # 距離計算
 
-[![CircleCI](https://circleci.com/gh/odt/distance.svg?style=svg)](https://circleci.com/gh/odt/distance)
-
 始点の緯度経度、終点の緯度経度が並んだ CSV があります。
 
 ``` csv
@@ -20,4 +18,4 @@
 
 標準入力から読み込んで標準出力に書き出します。
 
-[GitHub Package Registry](https://github.com/odt/distance/packages) に Docker イメージがあります。
+Docker イメージが GitHub Packages に置かれている。