diff --git a/mass/calibration/hci_lines.py b/mass/calibration/hci_lines.py
index 6610a324..14e532d7 100644
--- a/mass/calibration/hci_lines.py
+++ b/mass/calibration/hci_lines.py
@@ -18,7 +18,7 @@
 import xraydb
 
 INVCM_TO_EV = sp_const.c * sp_const.physical_constants['Planck constant in eV s'][0] * 100.0
-DEFAULT_PICKLE_NAME = 'nist_asd.pickle'
+DEFAULT_PICKLE_NAME = 'nist_asd_2023.pickle'
 
 
 class NIST_ASD:
diff --git a/mass/calibration/nist_asd.pickle b/mass/calibration/nist_asd_2019.pickle
similarity index 100%
rename from mass/calibration/nist_asd.pickle
rename to mass/calibration/nist_asd_2019.pickle
diff --git a/mass/calibration/nist_asd_2023.pickle b/mass/calibration/nist_asd_2023.pickle
new file mode 100644
index 00000000..c321f56d
Binary files /dev/null and b/mass/calibration/nist_asd_2023.pickle differ