diff --git a/packages/browsers/package.json b/packages/browsers/package.json
index 422cf93c..97b39787 100644
--- a/packages/browsers/package.json
+++ b/packages/browsers/package.json
@@ -94,6 +94,7 @@
   },
   "files": [
     "lib",
+    "src",
     "!*.tsbuildinfo"
   ],
   "dependencies": {
diff --git a/packages/puppeteer-core/package.json b/packages/puppeteer-core/package.json
index fb71cd59..e0644104 100644
--- a/packages/puppeteer-core/package.json
+++ b/packages/puppeteer-core/package.json
@@ -127,6 +127,7 @@
   },
   "files": [
     "lib",
+    "src",
     "!*.tsbuildinfo"
   ],
   "author": "The Chromium Authors",
diff --git a/packages/puppeteer/package.json b/packages/puppeteer/package.json
index 0816009c..951f2849 100644
--- a/packages/puppeteer/package.json
+++ b/packages/puppeteer/package.json
@@ -113,6 +113,7 @@
   },
   "files": [
     "lib",
+    "src",
     "install.js",
     "!*.tsbuildinfo"
   ],