diff --git a/src/build.js b/src/build.js
index ab7ab17..011c21f 100644
--- a/src/build.js
+++ b/src/build.js
@@ -11,7 +11,7 @@ const { stream: gotStream } = require('got')
 const got = require('got')
 const unzip = require('extract-zip')
 const { basename, join } = require('path')
-const { mkdir } = require('fs/promises')
+const { mkdir, readdir, rm } = require('fs/promises')
 const { createWriteStream } = require('fs')
 const { pipeline } = require('stream/promises')
 const envVar = process.env
@@ -119,6 +119,15 @@ const f = async () => {
   await mkdir(tmpPath, { recursive: true })
   await mkdir(publicPath, { recursive: true })
   await Promise.all(projects.map((project) => { return dl(project) }))
+
+  const files = await readdir(publicPath)
+  await Promise.all(files.map(async (file) => {
+    // cf pages limits file size to 26.2MB
+    // compressed (br/gz) files are excluded
+    if (file.startsWith('phishing-filter') && file.endsWith('.rules')) {
+      await rm(join(publicPath, file))
+    }
+  }))
 }
 
 const oisd = async () => {