diff --git a/README.md b/README.md
index fe153c17..544b2025 100644
--- a/README.md
+++ b/README.md
@@ -48,7 +48,7 @@ The extra fast DI (Dependency Injection) library running on Unity Game Engine.
 1. Navigate to your project's Packages folder and open the manifest.json file.
 2. Add this line below the "dependencies": { line
     - ```json title="Packages/manifest.json"
-      "jp.hadashikick.vcontainer": "https://github.com/hadashiA/VContainer.git?path=VContainer/Assets/VContainer#1.8.3",
+      "jp.hadashikick.vcontainer": "https://github.com/hadashiA/VContainer.git?path=VContainer/Assets/VContainer#1.8.4",
       ```
 3. UPM should now install the package.
 
diff --git a/VContainer/Assets/VContainer/package.json b/VContainer/Assets/VContainer/package.json
index a13a8c38..6a74675a 100644
--- a/VContainer/Assets/VContainer/package.json
+++ b/VContainer/Assets/VContainer/package.json
@@ -1,7 +1,7 @@
 {
   "name": "jp.hadashikick.vcontainer",
   "displayName": "VContainer",
-  "version": "1.8.3",
+  "version": "1.8.4",
   "unity": "2018.4",
   "description": "The extra fast DI (Dependency Injection) for Unity",
   "keywords": ["DI", "Dependency Injection", "DI Container"],
diff --git a/website/docs/getting-started/installation.mdx b/website/docs/getting-started/installation.mdx
index 4acfc9df..7dc1ca77 100644
--- a/website/docs/getting-started/installation.mdx
+++ b/website/docs/getting-started/installation.mdx
@@ -9,7 +9,7 @@ title: Installation
 1. Navigate to your project's Packages folder and open the manifest.json file.
 2. Add this line below the "dependencies": { line
     - ```json title="Packages/manifest.json"
-      "jp.hadashikick.vcontainer": "https://github.com/hadashiA/VContainer.git?path=VContainer/Assets/VContainer#1.8.3",
+      "jp.hadashikick.vcontainer": "https://github.com/hadashiA/VContainer.git?path=VContainer/Assets/VContainer#1.8.4",
       ```
 3. UPM should now install the package.
 
diff --git a/website/docusaurus.config.js b/website/docusaurus.config.js
index 9f200d37..cc0490b1 100644
--- a/website/docusaurus.config.js
+++ b/website/docusaurus.config.js
@@ -64,7 +64,7 @@ module.exports = {
         },
         {
           href: 'https://github.com/hadashiA/VContainer/releases',
-          label: 'v1.8.3',
+          label: 'v1.8.4',
           position: 'right',
         },
         {