diff --git a/plugins/eginer/MRPT_Utils/EZFIO.cfg b/src/MRPT_Utils/EZFIO.cfg
similarity index 100%
rename from plugins/eginer/MRPT_Utils/EZFIO.cfg
rename to src/MRPT_Utils/EZFIO.cfg
diff --git a/plugins/eginer/MRPT_Utils/H_apply.irp.f b/src/MRPT_Utils/H_apply.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/H_apply.irp.f
rename to src/MRPT_Utils/H_apply.irp.f
diff --git a/plugins/eginer/MRPT_Utils/NEED b/src/MRPT_Utils/NEED
similarity index 100%
rename from plugins/eginer/MRPT_Utils/NEED
rename to src/MRPT_Utils/NEED
diff --git a/plugins/eginer/MRPT_Utils/README.rst b/src/MRPT_Utils/README.rst
similarity index 100%
rename from plugins/eginer/MRPT_Utils/README.rst
rename to src/MRPT_Utils/README.rst
diff --git a/plugins/eginer/MRPT_Utils/density_matrix_based.irp.f b/src/MRPT_Utils/density_matrix_based.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/density_matrix_based.irp.f
rename to src/MRPT_Utils/density_matrix_based.irp.f
diff --git a/plugins/eginer/MRPT_Utils/energies_cas.irp.f b/src/MRPT_Utils/energies_cas.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/energies_cas.irp.f
rename to src/MRPT_Utils/energies_cas.irp.f
diff --git a/plugins/eginer/MRPT_Utils/excitations_cas.irp.f b/src/MRPT_Utils/excitations_cas.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/excitations_cas.irp.f
rename to src/MRPT_Utils/excitations_cas.irp.f
diff --git a/plugins/eginer/MRPT_Utils/fock_like_operators.irp.f b/src/MRPT_Utils/fock_like_operators.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/fock_like_operators.irp.f
rename to src/MRPT_Utils/fock_like_operators.irp.f
diff --git a/plugins/eginer/MRPT_Utils/give_2h2p.irp.f b/src/MRPT_Utils/give_2h2p.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/give_2h2p.irp.f
rename to src/MRPT_Utils/give_2h2p.irp.f
diff --git a/plugins/eginer/MRPT_Utils/mrpt_dress.irp.f b/src/MRPT_Utils/mrpt_dress.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/mrpt_dress.irp.f
rename to src/MRPT_Utils/mrpt_dress.irp.f
diff --git a/plugins/eginer/MRPT_Utils/mrpt_utils.irp.f b/src/MRPT_Utils/mrpt_utils.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/mrpt_utils.irp.f
rename to src/MRPT_Utils/mrpt_utils.irp.f
diff --git a/plugins/eginer/MRPT_Utils/new_way.irp.f b/src/MRPT_Utils/new_way.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/new_way.irp.f
rename to src/MRPT_Utils/new_way.irp.f
diff --git a/plugins/eginer/MRPT_Utils/new_way_second_order_coef.irp.f b/src/MRPT_Utils/new_way_second_order_coef.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/new_way_second_order_coef.irp.f
rename to src/MRPT_Utils/new_way_second_order_coef.irp.f
diff --git a/plugins/eginer/MRPT_Utils/psi_active_prov.irp.f b/src/MRPT_Utils/psi_active_prov.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/psi_active_prov.irp.f
rename to src/MRPT_Utils/psi_active_prov.irp.f
diff --git a/plugins/eginer/MRPT_Utils/second_order_new.irp.f b/src/MRPT_Utils/second_order_new.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/second_order_new.irp.f
rename to src/MRPT_Utils/second_order_new.irp.f
diff --git a/plugins/eginer/MRPT_Utils/second_order_new_2p.irp.f b/src/MRPT_Utils/second_order_new_2p.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/second_order_new_2p.irp.f
rename to src/MRPT_Utils/second_order_new_2p.irp.f
diff --git a/plugins/eginer/MRPT_Utils/set_as_holes_and_particles.irp.f b/src/MRPT_Utils/set_as_holes_and_particles.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/set_as_holes_and_particles.irp.f
rename to src/MRPT_Utils/set_as_holes_and_particles.irp.f
diff --git a/plugins/eginer/MRPT_Utils/utils_bitmask.irp.f b/src/MRPT_Utils/utils_bitmask.irp.f
similarity index 100%
rename from plugins/eginer/MRPT_Utils/utils_bitmask.irp.f
rename to src/MRPT_Utils/utils_bitmask.irp.f
diff --git a/src/Perturbation/NEED b/src/Perturbation/NEED
index 6c4ba6bc..92a5408e 100644
--- a/src/Perturbation/NEED
+++ b/src/Perturbation/NEED
@@ -1 +1 @@
-Determinants Hartree_Fock Davidson 
+Determinants Hartree_Fock Davidson  MRPT_Utils
diff --git a/src/dummy/NEED b/src/dummy/NEED
index aeff397e..88da1ffa 100644
--- a/src/dummy/NEED
+++ b/src/dummy/NEED
@@ -1 +1 @@
-AO_Basis AO_one_e_integrals Bitmask CIS CISD Davidson DavidsonDressed DavidsonUndressed Determinants Dressing Electrons Ezfio_files FCI FourIdx Generators_CAS Generators_full Hartree_Fock Integrals_Bielec MO_Basis MOGuess MO_one_e_integrals MPI Nuclei Perturbation Pseudo Psiref_CAS Psiref_Utils Selectors_CASSD Selectors_full Selectors_no_sorted Selectors_Utils SingleRefMethod Utils ZMQ
+AO_Basis AO_one_e_integrals Bitmask CIS CISD Davidson DavidsonDressed DavidsonUndressed Determinants Dressing Electrons Ezfio_files FCI FourIdx Generators_CAS Generators_full Hartree_Fock Integrals_Bielec MO_Basis MOGuess MO_one_e_integrals MPI Nuclei Perturbation Pseudo Psiref_CAS Psiref_Utils Selectors_CASSD Selectors_full Selectors_no_sorted Selectors_Utils SingleRefMethod Utils ZMQ MRPT_Utils