diff --git a/.github/actions/release/action.yml b/.github/actions/release/action.yml
new file mode 100644
index 0000000..3378359
--- /dev/null
+++ b/.github/actions/release/action.yml
@@ -0,0 +1,19 @@
+name: release
+description: release maltmill
+inputs:
+  token:
+    description: GitHub token
+    required: true
+runs:
+  using: composite
+  steps:
+  - name: setup go
+    uses: actions/setup-go@v3
+    with:
+      go-version: 1.x
+  - name: release
+    run: |
+      make crossbuild upload
+    shell: bash
+    env:
+      GITHUB_TOKEN: ${{ inputs.token }}
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
new file mode 100644
index 0000000..084f9b1
--- /dev/null
+++ b/.github/workflows/release.yaml
@@ -0,0 +1,14 @@
+name: release
+on:
+  push:
+    tags:
+    - "v[0-9]+.[0-9]+.[0-9]+"
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+    - name: checkout
+      uses: actions/checkout@v3
+    - uses: ./.github/actions/release
+      with:
+        token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/tagpr.yaml b/.github/workflows/tagpr.yaml
new file mode 100644
index 0000000..0e8f5cf
--- /dev/null
+++ b/.github/workflows/tagpr.yaml
@@ -0,0 +1,25 @@
+name: tagpr
+on:
+  push:
+    branches:
+    - "master"
+jobs:
+  tagpr:
+    runs-on: ubuntu-latest
+    steps:
+    - name: setup go
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.x
+    - name: checkout
+      uses: actions/checkout@v3
+    - name: tagpr
+      id: tagpr
+      uses: Songmu/tagpr@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    - uses: ./.github/actions/release
+      with:
+        tag: ${{ steps.tagpr.outputs.tag }}
+        token: ${{ secrets.GITHUB_TOKEN }}
+      if: "steps.tagpr.outputs.tag != ''"
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index fbf67c3..3d163a1 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,8 +1,8 @@
 name: Test
 on:
   push:
-  pull_request:
-
+    branches:
+    - "**"
 jobs:
   test:
     name: Test
@@ -14,18 +14,13 @@ jobs:
           - ubuntu-latest
           - macos-latest
           - windows-latest
-        go:
-          - "1.x"
-
     steps:
-      - name: Set up Go ${{ matrix.go }}
-        uses: actions/setup-go@v2
+      - name: Set up Go
+        uses: actions/setup-go@v3
         with:
-          go-version: ${{ matrix.go }}
-
+          go-version: 1.x
       - name: Check out code into the Go module directory
         uses: actions/checkout@v2
-
       - name: restore cache
         uses: actions/cache@v2
         with:
@@ -33,18 +28,16 @@ jobs:
           key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
           restore-keys: |
             ${{ runner.os }}-go-
-
       - name: Test
         run: make cover
         env:
           GITHUB_TOKEN: ${{ secrets.GHTOOLS_GITHUB_TOKEN }}
-
       - name: Send coverage
         uses: shogo82148/actions-goveralls@v1
         with:
           path-to-profile: cover.out
           parallel: true
-          flag-name: OS-${{ matrix.os }}-Go-${{ matrix.go }}
+          flag-name: OS-${{ matrix.os }}-Go-1.x
 
   # notifies that all test jobs are finished.
   finish:
diff --git a/Makefile b/Makefile
index 93bd42a..d759571 100644
--- a/Makefile
+++ b/Makefile
@@ -1,20 +1,10 @@
 VERSION = $(shell godzil show-version)
 COMMIT = $(shell git rev-parse --short HEAD)
 BUILD_LDFLAGS = "-s -w -X main.GitCommit=$(COMMIT)"
-EXTERNAL_TOOLS = \
-    golang.org/x/lint/golint            \
-    github.com/Songmu/godzil/cmd/godzil \
-    github.com/Songmu/ghch/cmd/ghch     \
-    github.com/mattn/goveralls                \
-    github.com/Songmu/gocredits/cmd/gocredits \
-    golang.org/x/tools/cmd/cover
-
 ifdef update
   u=-u
 endif
 
-export GO111MODULE=on
-
 .PHONY: default
 default: test
 
@@ -26,26 +16,19 @@ deps:
 # install external tools for this project
 .PHONY: devel-deps
 devel-deps: deps
-	@for tool in $(EXTERNAL_TOOLS) ; do \
-      echo "Installing $$tool" ; \
-      go install $$tool@latest; \
-    done
+	go install github.com/Songmu/godzil/cmd/godzil@latest
 
 # build generate binary on './bin' directory.
 .PHONY: build
 build:
 	go build -ldflags=$(BUILD_LDFLAGS) -o bin/ghr
 
-.PHONY: bump
-bump: devel-deps
-	godzil release
-
 CREDITS: go.sum devel-deps
-	gocredits -w
+	godzil credits -w
 
 .PHONY: crossbuild
 crossbuild: CREDITS
-	goxz -pv=v${VERSION} -build-ldflags=$(BUILD_LDFLAGS) \
+	godzil crossbuild -pv=v${VERSION} -build-ldflags=$(BUILD_LDFLAGS) \
         -arch=amd64 -d=./pkg/dist/v${VERSION}
 	cd pkg/dist/v${VERSION} && shasum -a 256 * > ./v${VERSION}_SHASUMS
 
@@ -57,10 +40,7 @@ install:
 .PHONY: upload
 upload: build devel-deps
 	bin/ghr -v
-	bin/ghr -body="$$(ghch --latest -F markdown)" v$(VERSION) pkg/dist/v$(VERSION)
-
-.PHONY: test-all
-test-all: lint test
+	bin/ghr v$(VERSION) pkg/dist/v$(VERSION)
 
 .PHONY: test
 test: deps
@@ -70,15 +50,10 @@ test: deps
 test-race:
 	go test -v -race ./...
 
-.PHONY: lint
-lint: devel-deps
-	go vet ./...
-	golint -set_exit_status ./...
-
 .PHONY: cover
 cover:
 	go test -coverprofile=cover.out
 	go tool cover -html cover.out
 
 .PHONY: release
-release: bump crossbuild upload
+release: crossbuild upload