diff --git a/sdk_lib/enter_chroot.sh b/sdk_lib/enter_chroot.sh
index 23078ff..2e09c32 100755
--- a/sdk_lib/enter_chroot.sh
+++ b/sdk_lib/enter_chroot.sh
@@ -82,6 +82,7 @@
   .gdata_cred.txt             # User/password for Google Docs on chromium.org
   .gdata_token                # Auth token for Google Docs on chromium.org
   .disable_build_stats_upload # Presence of file disables command stats upload
+  .netrc                      # May contain required source fetching credentials
 )
 
 INNER_CHROME_ROOT=$FLAGS_chrome_root_mount  # inside chroot