diff --git a/src/cipsi/EZFIO.cfg b/src/cipsi/EZFIO.cfg
new file mode 100644
index 00000000..5110b776
--- /dev/null
+++ b/src/cipsi/EZFIO.cfg
@@ -0,0 +1,5 @@
+[pert_2rdm]
+type: logical
+doc: If true, computes the one- and two-body rdms with perturbation theory
+interface: ezfio,provider,ocaml
+default: False