diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
deleted file mode 100644
index 2426a84db..000000000
--- a/.github/workflows/build.yml
+++ /dev/null
@@ -1,191 +0,0 @@
-name: build
-on:
-  workflow_run:
-    workflows: [ci]
-    types: [completed]
-    branches: [main, release]
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.workflow_run.head_branch }}
-  cancel-in-progress: true
-jobs:
-  info:
-    name: Collect information
-    runs-on: ubuntu-latest
-    if: github.event.workflow_run.conclusion != 'failure' && github.event.repository.full_name == 'reearth/reearth' && (github.event.workflow_run.head_branch == 'release' || !startsWith(github.event.head_commit.message, 'v'))
-    outputs:
-      sha_short: ${{ steps.info.outputs.sha_short }}
-      tag: ${{ steps.info.outputs.tag }}
-      tag_short: ${{ steps.info.outputs.tag_short }}
-      name: ${{ steps.info.outputs.name }}
-    steps:
-      - name: checkout
-        uses: actions/checkout@v3
-        with:
-          ref: ${{ github.event.workflow_run.head_sha }}
-      - name: Fetch tags
-        run: git fetch --prune --unshallow --tags
-      - name: Get info
-        id: info
-        env:
-          BRANCH: ${{ github.event.workflow_run.head_branch }}
-        # The tag name should be retrieved lazily, as tagging may be delayed.
-        run: |
-          echo "::set-output name=sha_short::$(git rev-parse --short HEAD)"
-          if [[ "$BRANCH" = "release" ]]; then
-            TAG=$(git tag --points-at HEAD)
-            if [[ ! -z "$TAG" ]]; then
-              echo "::set-output name=tag::$TAG"
-              echo "::set-output name=tag_short::${TAG#v}"
-            else
-              echo "::set-output name=name::rc"
-            fi
-          else
-            echo "::set-output name=name::nightly"
-          fi
-      - name: Show info
-        env:
-          SHA_SHORT: ${{ steps.info.outputs.sha_short }}
-          TAG: ${{ steps.info.outputs.tag }}
-          TAG_SHORT: ${{ steps.info.outputs.tag_short }}
-          NAME: ${{ steps.info.outputs.name }}
-        run: echo "sha_short=$SHA_SHORT, tag=$TAG, tag_short=$TAG_SHORT, name=$NAME"
-  build:
-    name: Build and release
-    runs-on: ubuntu-latest
-    needs:
-      - info
-    if: needs.info.outputs.name || needs.info.outputs.tag
-    env:
-      ARTIFACTS: server/dist/reearth_*.*
-      ARTIFACTS_WEB: reearth-web_${{ needs.info.outputs.name || needs.info.outputs.tag }}.tar.gz
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-          ref: ${{ github.event.workflow_run.head_sha }}
-      - name: Set up Go
-        uses: actions/setup-go@v3
-        with:
-          go-version: "1.19"
-      - name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v2
-        with:
-          args: release --rm-dist ${{ env.SNAPSHOT }}
-          workdir: server
-        env:
-          SNAPSHOT: ${{ !needs.info.outputs.tag && '--snapshot' || '' }}
-          GORELEASER_CURRENT_TAG: ${{ needs.info.outputs.tag || '0.0.0' }}
-      - name: Fetch reearth-web release
-        uses: dsaltares/fetch-gh-release-asset@master
-        with:
-          repo: reearth/reearth-web
-          version: tags/${{ needs.info.outputs.name || needs.info.outputs.tag }}
-          file: ${{ env.ARTIFACTS_WEB }}
-          token: ${{ secrets.GITHUB_TOKEN }}
-      - name: Rename artifacts
-        if: needs.info.outputs.name
-        run: for f in $ARTIFACTS; do mv $f $(echo $f | sed -E 's/_0\.0\.0-SNAPSHOT-[^_]*/_${{ needs.info.outputs.name }}/'); done
-      - name: List artifacts
-        run: ls -l server/dist
-      - name: Release nightly/rc
-        if: needs.info.outputs.name
-        uses: ncipollo/release-action@v1
-        with:
-          allowUpdates: true
-          artifacts: ${{ env.ARTIFACTS }},${{ env.ARTIFACTS_WEB }}
-          commit: ${{ github.sha }}
-          name: ${{ needs.info.outputs.name }}
-          tag: ${{ needs.info.outputs.name }}
-          body: ${{ needs.info.outputs.sha_short }}
-          prerelease: true
-      - name: Download latest changelog
-        if: needs.info.outputs.tag
-        uses: dawidd6/action-download-artifact@v2
-        with:
-          workflow: release.yml
-          name: changelog-${{ needs.info.outputs.tag }}
-      - name: Create GitHub release
-        if: needs.info.outputs.tag
-        uses: ncipollo/release-action@v1
-        with:
-          artifacts: ${{ env.ARTIFACTS }},${{ env.ARTIFACTS_WEB }}
-          commit: ${{ github.sha }}
-          name: ${{ needs.info.outputs.tag }}
-          tag: ${{ needs.info.outputs.tag }}
-          bodyFile: CHANGELOG_latest.md
-  docker:
-    name: Build and push Docker image
-    runs-on: ubuntu-latest
-    needs:
-      - info
-    if: needs.info.outputs.name || needs.info.outputs.tag
-    env:
-      IMAGE_NAME: reearth/reearth
-    defaults:
-      run:
-        working-directory: server
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          ref: ${{ github.event.workflow_run.head_sha }}
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-      - name: Login to DockerHub
-        uses: docker/login-action@v2
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-      - name: Get options
-        id: options
-        env:
-          TAG: ${{ needs.info.outputs.tag_short }}
-          NAME: ${{ needs.info.outputs.name }}
-          SHA: ${{ needs.info.outputs.sha_short }}
-        run: |
-          if [[ -n $TAG ]]; then
-            PLATFORMS=linux/amd64,linux/arm64
-            VERSION=$TAG
-            TAGS=$IMAGE_NAME:$TAG
-            if [[ ! $TAG =~ '-' ]]; then
-              TAGS+=,${IMAGE_NAME}:${TAG%.*}
-              TAGS+=,${IMAGE_NAME}:${TAG%%.*}
-              TAGS+=,${IMAGE_NAME}:latest
-            fi
-          else
-            PLATFORMS=linux/amd64
-            VERSION=$SHA
-            TAGS=$IMAGE_NAME:$NAME
-          fi
-          echo "::set-output name=platforms::$PLATFORMS"
-          echo "::set-output name=version::$VERSION"
-          echo "::set-output name=tags::$TAGS"
-      - name: Fetch reearth-web release
-        uses: dsaltares/fetch-gh-release-asset@master
-        with:
-          repo: reearth/reearth-web
-          version: tags/${{ needs.info.outputs.name || needs.info.outputs.tag }}
-          file: reearth-web_${{ needs.info.outputs.name || needs.info.outputs.tag }}.tar.gz
-          token: ${{ secrets.GITHUB_TOKEN }}
-          target: server/reearth-web.tar.gz
-      - name: Extract reearth-web
-        run: tar -xvf reearth-web.tar.gz; mv reearth-web web; ls
-      - name: Build and push docker image
-        uses: docker/build-push-action@v3
-        with:
-          context: server
-          platforms: ${{ steps.options.outputs.platforms }}
-          push: true
-          build-args: VERSION=${{ steps.options.outputs.version }}
-          tags: ${{ steps.options.outputs.tags }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
-      - name: Invoke deploy_test workflow
-        uses: benc-uk/workflow-dispatch@v1
-        if: needs.info.outputs.name == 'nightly'
-        with:
-          workflow: deploy_test
-          token: ${{ secrets.GPT }}
\ No newline at end of file
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
deleted file mode 100644
index 50c851dd9..000000000
--- a/.github/workflows/ci.yml
+++ /dev/null
@@ -1,48 +0,0 @@
-name: CI
-on:
-  push:
-    branches: [main, release]
-  pull_request:
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-jobs:
-  ci:
-    name: CI
-    runs-on: ubuntu-latest
-    if: github.event_name != 'push' || !startsWith(github.event.head_commit.message, 'v')
-    services:
-      mongo:
-        image: mongo:5-focal
-        ports:
-          - 27017:27017
-    steps:
-      - name: set up
-        uses: actions/setup-go@v3
-        with:
-          go-version: "1.19"
-      - name: checkout
-        uses: actions/checkout@v3
-      - name: cache
-        uses: actions/cache@v3
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: |
-            ${{ runner.os }}-go-
-      - name: golangci-lint
-        uses: golangci/golangci-lint-action@v3
-        with:
-          version: v1.52
-          args: --timeout=10m
-          working-directory: server
-      - name: test
-        run: go test ./... -v -race -coverprofile=coverage.txt -covermode=atomic -timeout 10m
-        env:
-          REEARTH_DB: mongodb://localhost
-        working-directory: server
-      - name: Send coverage report
-        uses: codecov/codecov-action@v2
-        with:
-          token: ${{ secrets.CODECOV_TOKEN }}
-          file: coverage.txt
\ No newline at end of file
diff --git a/.github/workflows/deploy_test.yml b/.github/workflows/deploy_test.yml
deleted file mode 100644
index e0fa88a22..000000000
--- a/.github/workflows/deploy_test.yml
+++ /dev/null
@@ -1,35 +0,0 @@
-name: deploy_test
-on:
-  workflow_dispatch:
-concurrency:
-  group: ${{ github.workflow }}
-  cancel-in-progress: true
-env:
-  IMAGE: reearth/reearth:nightly
-  IMAGE_GCP: us.gcr.io/reearth-oss/reearth:nightly
-  GCP_REGION: us-central1
-jobs:
-  deploy_test:
-    name: Deploy app to test env
-    runs-on: ubuntu-latest
-    if: github.event.repository.full_name == 'reearth/reearth'
-    steps:
-      - uses: google-github-actions/auth@v0
-        with:
-          credentials_json: ${{ secrets.GCP_SA_KEY }}
-      - name: Set up Cloud SDK
-        uses: google-github-actions/setup-gcloud@v0
-      - name: Configure docker
-        run: gcloud auth configure-docker --quiet
-      - name: docker push
-        run: |
-          docker pull $IMAGE
-          docker tag $IMAGE $IMAGE_GCP
-          docker push $IMAGE_GCP
-      - name: Deploy to Cloud Run
-        run: |
-          gcloud run deploy reearth-backend \
-            --image $IMAGE_GCP \
-            --region $GCP_REGION \
-            --platform managed \
-            --quiet
\ No newline at end of file