diff --git a/lib/firefox.js b/lib/firefox.js
index a87b2cc..83fc4b6 100644
--- a/lib/firefox.js
+++ b/lib/firefox.js
@@ -20,7 +20,8 @@ module.exports = async function (source) {
     'sign',
     '--source-dir', source,
     '--api-key', process.env.WEXT_SHIPIT_FIREFOX_JWT_ISSUER,
-    '--api-secret', process.env.WEXT_SHIPIT_FIREFOX_JWT_SECRET
+    '--api-secret', process.env.WEXT_SHIPIT_FIREFOX_JWT_SECRET,
+    '--ignore-files', 'package.json', 'package-lock.json', 'yarn.lock', '.npmrc', '.yarnc','.api-key'
   ]
 
   const spinner = ora('Loading web-ext tool...').start()
diff --git a/lib/opera.js b/lib/opera.js
index 8a85713..d550f5f 100644
--- a/lib/opera.js
+++ b/lib/opera.js
@@ -25,7 +25,8 @@ module.exports = async function (source) {
   const args = [
     'build',
     '--source-dir', source,
-    '--artifacts-dir', artifacts
+    '--artifacts-dir', artifacts,
+    '--ignore-files', 'package.json', 'package-lock.json', 'yarn.lock', '.npmrc', '.yarnc','.api-key'
   ]
 
   const spinner = ora()