diff --git a/src/build.js b/src/build.js
index ed8834a..4436e5d 100644
--- a/src/build.js
+++ b/src/build.js
@@ -5,7 +5,7 @@
 const { stream: gotStream } = require('got')
 const unzip = require('extract-zip')
 const { join } = require('path')
-const { mkdir } = require('fs/promises')
+const { mkdir, readdir, rm } = require('fs/promises')
 const { createWriteStream } = require('fs')
 const { pipeline } = require('stream/promises')
 
@@ -13,6 +13,7 @@ const rootPath = join(__dirname, '..')
 const tmpPath = join(rootPath, 'tmp')
 const zipPath = join(tmpPath, 'artifacts.zip')
 const artifactsUrl = 'https://gitlab.com/curben/malware-filter/-/jobs/artifacts/main/download?job=pages'
+const publicPath = join(rootPath, 'public')
 
 const f = async () => {
   await mkdir(tmpPath, { recursive: true })
@@ -25,6 +26,11 @@ const f = async () => {
 
   console.log('Extracting artifacts.zip...')
   await unzip(zipPath, { dir: rootPath })
+
+  const files = await readdir(publicPath)
+  for (const file of files) {
+    if (file.startsWith('oisd')) await rm(join(publicPath, file))
+  }
 }
 
 f()