diff --git a/chroot_version_hooks.d/187_cros_camera_cleanup b/chroot_version_hooks.d/187_cros_camera_cleanup
new file mode 100644
index 0000000..5532427
--- /dev/null
+++ b/chroot_version_hooks.d/187_cros_camera_cleanup
@@ -0,0 +1,7 @@
+# Copyright 2021 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Clean local portage caches. We have stale mojom headers in chroot after camera
+# package consolidation (b/177958529).
+sudo rm -rf /var/cache/portage/* /build/*/var/cache/portage/*