diff --git a/.github/workflows/build-debug.yml b/.github/workflows/build-debug.yml
index 8b390a8..9b8da81 100644
--- a/.github/workflows/build-debug.yml
+++ b/.github/workflows/build-debug.yml
@@ -16,6 +16,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - run: cargo build --verbose
+      - run: cargo test update_package_version -- 1.0.0 --nocapture
   build-dotnet:
     runs-on: ubuntu-latest
     timeout-minutes: 10
diff --git a/.github/workflows/build-release.yml b/.github/workflows/build-release.yml
new file mode 100644
index 0000000..2f643f2
--- /dev/null
+++ b/.github/workflows/build-release.yml
@@ -0,0 +1,105 @@
+name: Build-Release
+
+on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: "tag: git tag you want create. (sample 1.0.0)"
+        required: true
+      dry-run:
+        description: "dry-run: false = create release/nuget. true = never create release/nuget."
+        required: true
+        default: false
+        type: boolean
+
+jobs:
+  update-packagejson:
+    uses: Cysharp/Actions/.github/workflows/update-packagejson.yaml@main
+    with:
+      file-path: ./src/MemoryPack.Unity/Assets/Plugins/MemoryPack/package.json
+      tag: ${{ inputs.tag }}
+      dry-run: ${{ inputs.dry-run }}
+      push-tag: false
+
+  build-dotnet:
+    needs: [update-packagejson]
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - run: echo ${{ needs.update-packagejson.outputs.sha }}
+      - uses: actions/checkout@v3
+        with:
+          ref: ${{ needs.update-packagejson.outputs.sha }}
+      - uses: Cysharp/Actions/.github/actions/setup-dotnet@main
+        with:
+          dotnet-version: |
+            6.0.x
+            7.0.x
+      # pack nuget
+      - run: dotnet build -c Release -p:Version=${{ inputs.tag }}
+      - run: dotnet test -c Release --no-build
+      - run: dotnet pack -c Release --no-build -p:Version=${{ inputs.tag }} -o ./publish
+      - uses: actions/upload-artifact@v3
+        with:
+          name: nuget
+          path: ./publish
+
+  build-unity:
+    needs: [update-packagejson]
+    strategy:
+      matrix:
+        unity: ["2021.3.11f1"]
+        include:
+          - unity: 2021.3.11f1
+            license: UNITY_LICENSE_2021
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - run: echo ${{ needs.update-packagejson.outputs.sha }}
+      - uses: actions/checkout@v3
+        with:
+          ref: ${{ needs.update-packagejson.outputs.sha }}
+      # Execute scripts: Export Package
+      # /opt/Unity/Editor/Unity -quit -batchmode -nographics -silent-crashes -logFile -projectPath . -executeMethod PackageExporter.Export
+      - name: Export unitypackage
+        uses: game-ci/unity-builder@v2
+        env:
+          UNITY_LICENSE: ${{ secrets[matrix.license] }}
+        with:
+          projectPath: src/MemoryPack.Unity
+          unityVersion: ${{ matrix.unity }}
+          targetPlatform: StandaloneLinux64
+          buildMethod: PackageExporter.Export
+          versioning: None
+      # check meta files
+      - uses: Cysharp/Actions/.github/actions/check-metas@main
+        with:
+          directory: src/MemoryPack.Unity
+      # Store artifacts.
+      - uses: actions/upload-artifact@v3
+        with:
+          name: MemoryPack.${{ inputs.tag }}.unitypackage
+          path: ./src/MemoryPack.Unity/MemoryPack.${{ inputs.tag }}.unitypackage
+          if-no-files-found: error
+
+  # release
+  create-release:
+    needs: [update-packagejson, build-dotnet, build-unity]
+    uses: Cysharp/Actions/.github/workflows/create-release.yaml@main
+    with:
+      dry-run: ${{ inputs.dry-run }}
+      commit-id: ${{ needs.update-packagejson.outputs.sha }}
+      tag: ${{ inputs.tag }}
+      push-tag: true
+      nuget-push: true
+      unitypackage-upload: true
+      unitypackage-name: MemoryPack.${{ inputs.tag }}.unitypackage
+      unitypackage-path: ./MemoryPack.${{ inputs.tag }}.unitypackage/MemoryPack.${{ inputs.tag }}.unitypackage
+    secrets: inherit
+
+  cleanup:
+    if: needs.update-packagejson.outputs.is-branch-created == 'true'
+    needs: [update-packagejson, create-release]
+    uses: Cysharp/Actions/.github/workflows/clean-packagejson-branch.yaml@main
+    with:
+      branch: ${{ needs.update-packagejson.outputs.branch-name }}
diff --git a/csbindgen/src/lib.rs b/csbindgen/src/lib.rs
index e5a3233..331ce21 100644
--- a/csbindgen/src/lib.rs
+++ b/csbindgen/src/lib.rs
@@ -136,18 +136,52 @@ fn collect_field_types(
     }
 }
 
-#[test]
-fn test() {
-    let path = std::env::current_dir().unwrap();
-    println!("starting dir: {}", path.display()); // csbindgen/csbindgen
+#[cfg(test)]
+mod tests {
+    use std::{
+        env,
+        fs::{self},
+    };
 
-    Builder::new()
-        .input_bindgen_file("csbindgen-tests/src/liblz4.rs")
-        .csharp_class_name("LibLz4")
-        .csharp_dll_name("csbindgen_tests")
-        .generate_to_file(
-            "csbindgen-tests/src/lz4_ffi.rs",
-            "dotnet-sandbox/lz4_bindgen.cs",
-        )
-        .unwrap();
+    use super::*;
+
+    #[test]
+    fn test() {
+        let path = std::env::current_dir().unwrap();
+        println!("starting dir: {}", path.display()); // csbindgen/csbindgen
+
+        Builder::new()
+            .input_bindgen_file("csbindgen-tests/src/liblz4.rs")
+            .csharp_class_name("LibLz4")
+            .csharp_dll_name("csbindgen_tests")
+            .generate_to_file(
+                "csbindgen-tests/src/lz4_ffi.rs",
+                "dotnet-sandbox/lz4_bindgen.cs",
+            )
+            .unwrap();
+    }
+
+    // cargo test update_package_version -- 1.0.0 --nocapture
+    #[test]
+    fn update_package_version() {
+        let args: Vec<String> = env::args().collect();
+        // 0: exe path
+        // 1: update_package_version
+        // 2: 1.0.0
+        // 3: --nocapture
+
+        if args[1] != "update_package_version" {
+            return;
+        }
+
+        println!("version: {}", args[2]);
+        let mut path = std::env::current_dir().unwrap();
+        println!("current_dir: {}", path.display());
+
+        path.push("Cargo.toml");
+
+        let toml = fs::read_to_string(path).unwrap();
+
+        println!("current toml: {}", toml);
+    }
 }