diff --git a/.github/workflows/pullRequest.yml b/.github/workflows/pullRequest.yml
new file mode 100644
index 0000000..0cb29ed
--- /dev/null
+++ b/.github/workflows/pullRequest.yml
@@ -0,0 +1,10 @@
+name: check for pull request into master
+
+on:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    uses: ./.github/workflows/testAndBuild.yml
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000..1b819d8
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,50 @@
+name: Build and release for official
+
+on:
+  push:
+    tags:
+      - "*.*.*"
+
+jobs:
+  build:
+    uses: ./.github/workflows/testAndBuild.yml
+    with:
+      official_release: true
+
+  deploy:
+    needs: build
+    runs-on: windows-latest
+
+    steps:
+      - name: Download artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: ${{ github.event.repository.name }}
+          path: ./
+
+      - name: Deploy to GitHub
+        uses: softprops/action-gh-release@v1
+        with:
+          body: ${{ github.event.repository.name }} official release
+          draft: true
+          files: |
+            ./${{ github.event.repository.name }}-*.zip
+            ./*-*.nvda-addon
+            ./${{ github.event.repository.name }}-*.json
+
+  error_notify:
+    runs-on: ubuntu-latest
+    needs: deploy
+    if: ${{ failure() }}
+    steps:
+      - name: Send GitHub Action trigger data to Slack workflow
+        uses: slackapi/slack-github-action@v1
+        with:
+          payload: |
+            {
+              "text": "Github actions build failed! <${{ github.server_url }}/${{ github.repository }}|${{ github.event.repository.name }}>のofficial releaseビルドが失敗しました。\n<${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}|対象のrun>お確認し、対応着手時・完了後は、本チャンネルにて経緯を報告ください。"
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_ALERT_WEBHOOK_URL }}
+          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+
diff --git a/.github/workflows/snapshot.yml b/.github/workflows/snapshot.yml
new file mode 100644
index 0000000..0f293d7
--- /dev/null
+++ b/.github/workflows/snapshot.yml
@@ -0,0 +1,84 @@
+name: Build and release for snapshot
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    uses: ./.github/workflows/testAndBuild.yml
+
+  deploy:
+    needs: build
+    runs-on: windows-latest
+
+    steps:
+      - name: Download artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: ${{ github.event.repository.name }}
+          path: ./
+
+      - name: Re-create the tag
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const { owner, repo } = context.repo
+            const tagName = repo + "-latestcommit"
+            try {
+              // Fetch the release by its tag
+              const { data: release } = await github.rest.repos.getReleaseByTag({ owner, repo, tag: tagName })
+              // Delete the release if exists
+              await github.rest.repos.deleteRelease({ owner, repo, release_id: release.id })
+              console.log("deleted release");
+            } catch(err) {
+              if(err.status !== 404){
+                throw err;
+              }
+              console.log('No release found for deletion');
+            }
+            try {
+              await github.rest.git.deleteRef({owner, repo, ref: "tags/" + tagName})
+              console.log("deleted tag");
+            } catch(err) {
+              console.log('Failed to delete tag'+err.message);
+            }
+            try {
+              await github.rest.git.createRef({owner, repo, ref: "refs/tags/" + tagName, sha: context.sha})
+              console.log("created tag");
+            } catch(err) {
+              console.log('Failed to create tag'+err.message);
+            }
+
+      - name: Deploy to GitHub
+        uses: softprops/action-gh-release@v1
+        with:
+          name: Snapshot
+          tag_name: ${{ github.event.repository.name }}-latestcommit
+          body: Automatic build from master branch
+          files: |
+            ./${{ github.event.repository.name }}-*.zip
+            ./*-*.nvda-addon
+            ./${{ github.event.repository.name }}-*.json
+
+      - name: register snapshot to actlab site
+        run: |
+          curl "https://actlab.org/api/addAlphaVersion?repo_name=${{ github.repository }}&commit_hash=${{ github.sha }}&version=${{ needs.build.outputs.build_version }}&password=${{ secrets.SCRIPT_PASSWORD }}"
+
+  error_notify:
+    runs-on: ubuntu-latest
+    needs: deploy
+    if: ${{ failure() }}
+    steps:
+      - name: Send GitHub Action trigger data to Slack workflow
+        uses: slackapi/slack-github-action@v1
+        with:
+          payload: |
+            {
+              "text": "Github actions build failed! <${{ github.server_url }}/${{ github.repository }}|${{ github.event.repository.name }}>のビルドが失敗しました。\n<${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}|対象のrun>お確認し、対応着手時・完了後は、本チャンネルにて経緯を報告ください。"
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_ALERT_WEBHOOK_URL }}
+          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+
diff --git a/.github/workflows/testAndBuild.yml b/.github/workflows/testAndBuild.yml
new file mode 100644
index 0000000..c04948f
--- /dev/null
+++ b/.github/workflows/testAndBuild.yml
@@ -0,0 +1,68 @@
+name: Test and build
+
+on:
+  workflow_call:
+    inputs:
+      official_release:
+        description: Whether this is an official release
+        default: false
+        type: boolean
+    outputs:
+      build_version:
+        description: Version of the built package
+        value: ${{ jobs.build.outputs.build_version }}
+
+jobs:
+  build:
+    runs-on: windows-latest
+    outputs:
+      build_version: ${{ steps.output_version.outputs.version }}
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          architecture: x86
+          python-version: 3.8
+          cache: pip
+
+      - name: Install requirements
+        run: |
+          python -m pip install -r requirements.txt
+
+      - name: Test
+        run: |
+          echo skiped tests
+
+      - name: Set tag name if This is an official release
+        run: echo "TAG_NAME=$($env:GITHUB_REF.Replace('refs/tags/', ''))" >> $env:GITHUB_ENV
+        if: ${{ inputs.official_release }}
+
+      - name: Build
+        run: |
+          python tools\build.py
+        env:
+          COMMIT_TIMESTAMP: ${{ github.event.head_commit.timestamp}}
+
+      - name: output version
+        id: output_version
+        shell: python
+        run: |
+          import os, sys
+          sys.path.append(os.getcwd())
+          import buildVars
+          with open(os.environ["GITHUB_OUTPUT"], mode = "a") as f:
+            f.write("version="+buildVars.ADDON_VERSION)
+
+      - name: Archive production artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ github.event.repository.name }}
+          path: |
+            ./${{ github.event.repository.name }}-*.zip
+            ./*-*.nvda-addon
+            ./${{ github.event.repository.name }}-*.json
+
diff --git a/appveyor-release.yml b/appveyor-release.yml
deleted file mode 100644
index 4e372ad..0000000
--- a/appveyor-release.yml
+++ /dev/null
@@ -1,55 +0,0 @@
-version: development.{build}-{branch}
-branches:
-  only:
-    - release
-
-skip_branch_with_pr: true
-
-environment:
-  matrix:
-    # For Python versions available on Appveyor, see
-    # http://www.appveyor.com/docs/installed-software#python
-    # The list here is complete (excluding Python 2.6, which
-    # isn't covered by this document) at the time of writing.
-
-    - PYTHON: "C:\\Python37"
-
-install:
-  # We need wheel installed to build wheels
-  - cmd: set path=C:\\Python37;C:\\Python37\\Scripts;C:\\Python37\\lib;%path%
-  - cmd: python -m pip install -r requirements.txt
-
-build: off
-
-test_script:
-  # Put your test command here.
-  # If you don't need to build C extensions on 64-bit Python 3.3 or 3.4,
-  # you can remove "build.cmd" from the front of the command, as it's
-  # only needed to support those cases.
-  # Note that you must use the environment variable %PYTHON% to refer to
-  # the interpreter you're using - Appveyor does not do anything special
-  # to put the Python evrsion you want to use on PATH.
-  - "echo Skipped Tests"
-
-after_test:
-  # This step builds your wheels.
-  # Again, you only need build.cmd if you're building C extensions for
-  # 64-bit Python 3.3/3.4. And you need to use %PYTHON% to get the correct
-  # interpreter
-  - cmd: python tools\\build.py --appveyor
-
-artifacts:
-  - path: DFN-*.zip
-  - path: dokutor_for_nvda-*.nvda-addon
-  - path: DFN-*.json
-
-deploy:
-  - provider: GitHub
-    description: "DFN official release"
-    auth_token:
-      secure: iNSx8v6c+0TP9IyckinrvNWuX+hc7SKruOqRDl9GxdX59sZ2yqB8+UDAtqdPzKIg
-    artifact: /(DFN-.*\.zip)|(dokutor_for_nvda-.*\.nvda-addon)|(DFN-.*\.json)/
-    draft: true
-    prerelease: false
-    on:
-      APPVEYOR_REPO_TAG: true
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index 82177d3..0000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,73 +0,0 @@
-version: development.{build}-{branch}
-branches:
-  only:
-    - master
-
-skip_branch_with_pr: true
-skip_tags: true
-
-environment:
-  githubToken:
-    secure: iNSx8v6c+0TP9IyckinrvNWuX+hc7SKruOqRDl9GxdX59sZ2yqB8+UDAtqdPzKIg
-  SCRIPT_PASSWORD:
-    secure: 9RvVUKVQ8MsoG5LOZ86VyFQF19JXXS33tDzomLH/jZM=
-  matrix:
-
-    # For Python versions available on Appveyor, see
-    # http://www.appveyor.com/docs/installed-software#python
-    # The list here is complete (excluding Python 2.6, which
-    # isn't covered by this document) at the time of writing.
-
-    - PYTHON: "C:\\Python37"
-
-install:
-  # We need wheel installed to build wheels
-  - cmd: set path=C:\\Python37;C:\\Python37\\Scripts;C:\\Python37\\lib;%path%
-  - cmd: python -m pip install -r requirements.txt
-
-build: off
-
-test_script:
-  # Put your test command here.
-  # If you don't need to build C extensions on 64-bit Python 3.3 or 3.4,
-  # you can remove "build.cmd" from the front of the command, as it's
-  # only needed to support those cases.
-  # Note that you must use the environment variable %PYTHON% to refer to
-  # the interpreter you're using - Appveyor does not do anything special
-  # to put the Python evrsion you want to use on PATH.
-  - "echo Skipped Tests"
-
-after_test:
-  # This step builds your wheels.
-  # Again, you only need build.cmd if you're building C extensions for
-  # 64-bit Python 3.3/3.4. And you need to use %PYTHON% to get the correct
-  # interpreter
-  - cmd: python tools\\build.py --appveyor
-  - cmd: if defined APPVEYOR_PULL_REQUEST_NUMBER appveyor exit 0
-  - cmd: curl "https://actlab.org/git-release.php?repo_name=%APPVEYOR_REPO_NAME%&tag_name=DFN-latestcommit&password=%SCRIPT_PASSWORD%"
-  - cmd: git tag -d DFN-latestcommit
-  - cmd: git push -d https://actlab-auto:%githubToken%@github.com/actlaboratory/DFN.git DFN-latestcommit
-  - cmd: git tag DFN-latestcommit
-  - cmd: git push https://actlab-auto:%githubToken%@github.com/actlaboratory/DFN.git DFN-latestcommit
-
-artifacts:
-  - path: DFN-*.zip
-  - path: dokutor_for_nvda-*.nvda-addon
-  - path: DFN-*.json
-
-deploy:
-  - provider: GitHub
-    release: DFN-latestcommit
-    skip_tags: true
-    Force update: true
-    description: 'automatic build from master branch'
-    auth_token:
-      secure: iNSx8v6c+0TP9IyckinrvNWuX+hc7SKruOqRDl9GxdX59sZ2yqB8+UDAtqdPzKIg
-    artifact: /(DFN-.*\.zip)|(dokutor_for_nvda-.*\.nvda-addon)|(DFN-.*\.json)/                # upload all NuGet packages to release assets
-    draft: false
-    prerelease: false
-    on:
-      branch: master                 # release from master branch only
-
-after_deploy:
-  - cmd: echo import buildVars;print("https://actlab.org/api/addAlphaVersion?repo_name=%APPVEYOR_REPO_NAME%&commit_hash=%APPVEYOR_REPO_COMMIT%&version="+buildVars.ADDON_VERSION+"&password=%SCRIPT_PASSWORD%",end="") | C:\\Python37\python.exe | xargs -n1 curl
diff --git a/tools/build.py b/tools/build.py
index 0a76698..6e19ce8 100644
--- a/tools/build.py
+++ b/tools/build.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 #app build tool
 #Copyright (C) 2019 Yukio Nozawa <personal@nyanchangames.com>
-#Copyright (C) 2019-2020 guredora <contact@guredora.com>
+#Copyright (C) 2019-2024 guredora <contact@guredora.com>
 #Copyright (C) 2021 yamahubuki <itiro.ishino@gmail.com>
 #Copyright (C) 2021 Hiroki Fujii <hfujii@hisystron.com>
 
@@ -25,20 +25,17 @@
 
 class build:
 	def __init__(self):
-		# appVeyorかどうかを判別し、処理をスタート
-		appveyor = self.setAppVeyor()
-		print("Starting build for %s (appveyor mode=%s)" % (buildVars.ADDON_KEYWORD, appveyor,))
+		# Github actionsなどの自動実行かどうかを判別し、処理をスタート
+		automated = self.setAutomated()
+		print("Starting build for %s(automated mode=%s)" % (buildVars.ADDON_KEYWORD, automated,))
 
 		# パッケージのパスとファイル名を決定
 		package_path = "output\\"
-		if 'APPVEYOR_REPO_TAG_NAME' in os.environ:
-			build_filename = os.environ['APPVEYOR_REPO_TAG_NAME']
-			# タグ名とバージョンが違ったらエラー
-			if build_filename != buildVars.ADDON_VERSION:
-				print("Unexpected tag name. expecting %s." %(buildVars.ADDON_VERSION,))
-				exit(-1)
-		else:
-			build_filename = 'snapshot'
+		build_filename = os.environ.get('TAG_NAME', 'snapshot')
+		# snapshotではなかった場合は、タグ名とバージョンが違ったらエラー
+		if (build_filename != "snapshot") and (build_filename != buildVars.ADDON_VERSION):
+			print("Unexpected tag name. expecting %s." %(buildVars.ADDON_VERSION,))
+			exit(-1)
 		print("Will be built as %s" % build_filename)
 
 		# addonフォルダの存在を確認
@@ -47,23 +44,18 @@ def __init__(self):
 			exit(-1)
 
 		# 前のビルドをクリーンアップ
-		self.creen(package_path)
+		self.clean(package_path)
 
-		# appveyorでのスナップショットの場合はバージョン番号を一時的に書き換え
-		# バージョン番号をセット
-		if build_filename == "snapshot" and appveyor:
-			self.version_number = self.makeSnapshotVersionNumber()
-		elif build_filename == "snapshot":
-			self.version_number = buildVars.ADDON_VERSION
-		else:
-			self.version_number = build_filename
+		# 自動実行でのスナップショットの場合はバージョン番号を一時的に書き換え
+		if build_filename == "snapshot" and automated:
+			print(self.makeSnapshotVersionNumber())
 
 		# ビルド
 		self.build(package_path, build_filename)
 		archive_name = "%s-%s.zip" % (buildVars.ADDON_KEYWORD, build_filename,)
-		addon_filename = "%s-%s.nvda-addon" % (buildVars.ADDON_NAME, self.version_number)
+		addon_filename = "%s-%s.nvda-addon" % (buildVars.ADDON_NAME, buildVars.ADDON_VERSION,)
 		shutil.copyfile(package_path + addon_filename, addon_filename)
-		self.makePackageInfo(archive_name, addon_filename, self.version_number, build_filename)
+		self.makePackageInfo(archive_name, addon_filename, build_filename)
 		print("Build finished!")
 
 	def runcmd(self,cmd):
@@ -71,12 +63,10 @@ def runcmd(self,cmd):
 		proc.communicate()
 		return proc.poll()
 
-	def setAppVeyor(self):
-		if len(sys.argv)>=2 and sys.argv[1]=="--appveyor":
-			return True
-		return False
+	def setAutomated(self):
+		return os.environ.get("GITHUB_ACTIONS", "false") == "true"
 
-	def creen(self,package_path):
+	def clean(self,package_path):
 		if os.path.isdir(package_path):
 			print("Clearling previous build...")
 			shutil.rmtree("output\\")
@@ -84,15 +74,15 @@ def creen(self,package_path):
 	def makeSnapshotVersionNumber(self):
 		#日本標準時オブジェクト
 		JST = datetime.timezone(datetime.timedelta(hours=+9))
-		#Pythonは世界標準時のZに対応していないので文字列処理で乗り切り、それを日本標準時に変換
-		dt = datetime.datetime.fromisoformat(os.environ["APPVEYOR_REPO_COMMIT_TIMESTAMP"][0:19]+"+00:00").astimezone(JST)
-		major = str(dt.year)[2:4]+str(dt.month).zfill(2)
+		dt = datetime.datetime.fromisoformat(os.environ["COMMIT_TIMESTAMP"]).astimezone(JST)
+		major = f"{dt.year % 100:02d}{dt.month:02d}"
 		minor = str(dt.day)
 		patch = str(int(math.floor((dt.hour*3600+dt.minute*60+dt.second)/86400*1000)))
+		buildVars.ADDON_VERSION = major+"."+minor+"."+patch
+		buildVars.ADDON_RELEASE_DATE = str(dt.date())
 		bumpup.bumpup(major+"."+minor+"."+patch, str(dt.date()))
 		return major+"."+minor+"."+patch
 
-
 	def build(self, package_path, build_filename):
 		print("Building...")
 		shutil.copytree("public", package_path)
@@ -100,22 +90,11 @@ def build(self, package_path, build_filename):
 		print("build finished with status %d" % ret)
 		if ret != 0:
 			sys.exit(ret)
-
-
 		print("Compressing into package...")
 		shutil.make_archive("%s-%s" % (buildVars.ADDON_KEYWORD, build_filename,),'zip',package_path)
 
-	def makePackageInfo(self, archive_name, addon_filename, addon_version, build_filename):
-		if "APPVEYOR_REPO_COMMIT_TIMESTAMP" in os.environ:
-			#日本標準時オブジェクト
-			JST = datetime.timezone(datetime.timedelta(hours=+9))
-			#Pythonは世界標準時のZに対応していないので文字列処理で乗り切り、それを日本標準時に変換
-			dt = datetime.datetime.fromisoformat(os.environ["APPVEYOR_REPO_COMMIT_TIMESTAMP"][0:19]+"+00:00").astimezone(JST)
-			dateStr = "%s-%s-%s" % (str(dt.year), str(dt.month).zfill(2), str(dt.day).zfill(2))
-		else:
-			dateStr = "this is a local build."
-		
-		print("computing hash...")
+	def makePackageInfo(self, archive_name, addon_filename, build_filename):
+		print("Calculating  hash...")
 		with open(archive_name, mode = "rb") as f:
 			content = f.read()
 		package_hash = hashlib.sha1(content).hexdigest()
@@ -127,9 +106,9 @@ def makePackageInfo(self, archive_name, addon_filename, addon_version, build_fil
 		info["package_hash"] = package_hash
 		info["patch_filename"] = addon_filename
 		info["patch_hash"] = addon_hash
-		info["version"] = addon_version
-		info["released_date"] = dateStr
-		with open("DFN-%s_info.json" % (build_filename,), mode = "w") as f:
+		info["version"] = buildVars.ADDON_VERSION
+		info["released_date"] = buildVars.ADDON_RELEASE_DATE
+		with open("%s-%s_info.json" % (buildVars.ADDON_KEYWORD, build_filename,), mode = "w") as f:
 			json.dump(info, f)