diff --git a/images/capi/packer/files/flatcar/scripts/bootstrap-flatcar.sh b/images/capi/packer/files/flatcar/scripts/bootstrap-flatcar.sh
index 954f5309c2..08cfdc588f 100644
--- a/images/capi/packer/files/flatcar/scripts/bootstrap-flatcar.sh
+++ b/images/capi/packer/files/flatcar/scripts/bootstrap-flatcar.sh
@@ -1,4 +1,7 @@
 #!/bin/bash
+#
+# This script installs PyPy as a Python interpreter on a Flatcar instance.
+
 set -e
 
 [[ -n ${DEBUG:-} ]] && set -o xtrace