diff --git a/afterBuild.js b/afterBuild.js
new file mode 100644
index 0000000..920dc10
--- /dev/null
+++ b/afterBuild.js
@@ -0,0 +1,39 @@
+import fs from 'fs';
+import path from 'path';
+
+function copyProtoFiles(sourceDir, targetDir) {
+    // Ensure the target directory exists
+    if (!fs.existsSync(targetDir)) {
+        fs.mkdirSync(targetDir, { recursive: true });
+    }
+
+    // Function to recursively find all .proto files
+    function findProtoFiles(dir, fileList = []) {
+        const files = fs.readdirSync(dir, { withFileTypes: true });
+
+        for (const file of files) {
+            const filePath = path.join(dir, file.name);
+            if (file.isDirectory()) {
+                findProtoFiles(filePath, fileList);
+            } else if (path.extname(file.name) === '.proto') {
+                fileList.push(filePath);
+            }
+        }
+
+        return fileList;
+    }
+
+    // Find all .proto files in the source directory and its subdirectories
+    const protoFiles = findProtoFiles(sourceDir);
+
+    // Copy each .proto file to the target directory
+    for (const sourcePath of protoFiles) {
+        const fileName = path.basename(sourcePath);
+        const targetPath = path.join(targetDir, fileName);
+        fs.copyFileSync(sourcePath, targetPath);
+        console.log(`Copied: ${sourcePath} -> ${targetPath}`);
+    }
+}
+
+// Copy .proto files from src to dist
+copyProtoFiles('src', 'dist');
diff --git a/package.json b/package.json
index 4fbab5b..5622bde 100644
--- a/package.json
+++ b/package.json
@@ -28,8 +28,8 @@
   "type": "module",
   "license": "MIT",
   "scripts": {
-    "build": "rimraf dist && tsup",
-    "ci": "npm run build && npm run lint:fix && npm run test",
+    "build": "rimraf dist && tsup && node afterBuild.js",
+    "ci": "npm run build && node afterBuild.js && npm run lint:fix && npm run test",
     "dev": "tsc --watch",
     "lint:fix": "tsc && prettier --write .",
     "lint": "tsc && prettier --check --ignore-unknown .",