diff --git a/corems/__init__.py b/corems/__init__.py
index 36ed99d7..bfcbadda 100644
--- a/corems/__init__.py
+++ b/corems/__init__.py
@@ -55,9 +55,9 @@ def chunks(lst, n):
         yield lst[i : i + n]
 
 
-def corems_md5(fname):
+def corems_sha256(fname):
     bytes_io = fname.open("rb").read()
 
-    md5_returned = hashlib.sha256(bytes_io).hexdigest()
+    sha256_returned = hashlib.sha256(bytes_io).hexdigest()
 
-    return "{}:{}".format("sha256", md5_returned)
+    return "{}:{}".format("sha256", sha256_returned)
diff --git a/corems/mass_spectra/output/export.py b/corems/mass_spectra/output/export.py
index b46d3274..becee301 100644
--- a/corems/mass_spectra/output/export.py
+++ b/corems/mass_spectra/output/export.py
@@ -16,7 +16,7 @@
 from openpyxl import load_workbook
 from pandas import DataFrame, ExcelWriter, read_excel
 
-from corems import __version__, corems_md5
+from corems import __version__, corems_sha256
 from corems.encapsulation.output import parameter_to_dict
 from corems.encapsulation.output.parameter_to_json import (
     dump_lcms_settings_json,
@@ -507,7 +507,7 @@ def get_calibration_stats(self, gcms, id_label):
 
         calibration_parameters["calibration_rt_ri_pairs_ref"] = gcms.ri_pairs_ref
         calibration_parameters["data_url"] = str(gcms.cal_file_path)
-        calibration_parameters["has_input"] = id_label + corems_md5(gcms.cal_file_path)
+        calibration_parameters["has_input"] = id_label + corems_sha256(gcms.cal_file_path)
         calibration_parameters["data_name"] = str(gcms.cal_file_path.stem)
         calibration_parameters["calibration_method"] = ""
 
@@ -569,11 +569,11 @@ def get_data_metadata(self, gcms, id_label, output_path):
 
         data_metadata["data_name"].append(gcms.sample_name)
         data_metadata["input_data_url"].append(str(gcms.file_location))
-        data_metadata["has_input"].append(id_label + corems_md5(gcms.file_location))
+        data_metadata["has_input"].append(id_label + corems_sha256(gcms.file_location))
 
         data_metadata["output_data_name"] = str(output_path.stem)
         data_metadata["output_data_url"] = str(output_path)
-        data_metadata["has_output"] = id_label + corems_md5(output_path)
+        data_metadata["has_output"] = id_label + corems_sha256(output_path)
 
         return data_metadata