diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1b64605..2597584 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Manifest Version 1.2.5
+
+- improve post build script
+  
 ## Manifest Version 1.2.4
 
 - updated showing assets page to use new api
diff --git a/release-scripts/post-build.ts b/release-scripts/post-build.ts
index 161e87d..f095a0f 100644
--- a/release-scripts/post-build.ts
+++ b/release-scripts/post-build.ts
@@ -1,10 +1,21 @@
 
 (async () => {
     const CONTENT_BUILD_PATH = 'src/extension/content.js'
+    const METAMASK_STUB_PATH = 'src/extension/metamask-stub.js'
     const fs = (await import('fs')).default
+    const path = (await import('path')).default
     const pkg = JSON.parse(fs.readFileSync('dist/manifest.json').toString());
     pkg.content_scripts[0].js[0] = CONTENT_BUILD_PATH
+    pkg.content_scripts[1].js[0] = METAMASK_STUB_PATH
     fs.writeFileSync('dist/manifest.json', JSON.stringify(pkg, null, 2))
     // fs.writeFileSync('dist/rules.js', fs.readFileSync('rules.json').toString())
     fs.writeFileSync('dist/'+ CONTENT_BUILD_PATH, fs.readFileSync('src/extension/content.js').toString())
-  })();
\ No newline at end of file
+    fs.writeFileSync('dist/'+ METAMASK_STUB_PATH, fs.readFileSync('src/extension/metamask-stub.js').toString())
+    const directory = 'dist/assets/';
+    fs.readdir(directory, (err, files) => {
+        files.forEach(file => {
+          if(file.startsWith('content'))
+                fs.unlinkSync( path.resolve(directory + file)) 
+        });
+    });
+  })();
diff --git a/src/extension/manifest.json b/src/extension/manifest.json
index 00cba75..2dbb1aa 100644
--- a/src/extension/manifest.json
+++ b/src/extension/manifest.json
@@ -3,8 +3,8 @@
     "name": "__MSG_appName__",
     "description": "__MSG_appDesc__",
     "default_locale": "en",
-    "version": "1.2.4",
-    "version_name": "1.2.4",
+    "version": "1.2.5",
+    "version_name": "1.2.5",
     "icons": {
       "16": "assets/extension-icon/wallet_16.png",
       "32": "assets/extension-icon/wallet_32.png",