diff --git a/sdk_container/src/third_party/coreos-overlay/coreos/config/env/sys-libs/timezone-data b/sdk_container/src/third_party/coreos-overlay/coreos/config/env/sys-libs/timezone-data
new file mode 100644
index 0000000000..7b152f09de
--- /dev/null
+++ b/sdk_container/src/third_party/coreos-overlay/coreos/config/env/sys-libs/timezone-data
@@ -0,0 +1,4 @@
+cros_post_src_install_timezone_data_flatcar_modifications() {
+    # install the symlink by hand to not break existing timezones
+    dosym . /usr/share/zoneinfo/posix
+}