diff --git a/Repopulator/CsvToDicomTagMapping.cs b/Repopulator/CsvToDicomTagMapping.cs
index b6b6a19..1006292 100644
--- a/Repopulator/CsvToDicomTagMapping.cs
+++ b/Repopulator/CsvToDicomTagMapping.cs
@@ -73,10 +73,11 @@ public bool BuildMap(DicomRepopulatorOptions options, out string log)
 
                 CsvFile = options.CsvFileInfo;
 
-                using (var reader = new CsvReader(CsvFile.OpenText(), new(System.Globalization.CultureInfo.CurrentCulture)
+                var conf = new CsvConfiguration(System.Globalization.CultureInfo.CurrentCulture)
                 {
-                    TrimOptions = TrimOptions.Trim
-                }))
+                    TrimOptions=TrimOptions.Trim
+                };
+                using (var reader = new CsvReader(CsvFile.OpenText(), conf))
                 {
                     reader.Read();
                     var couldReadHeader = reader.ReadHeader();
diff --git a/Repopulator/Matchers/TagMatcher.cs b/Repopulator/Matchers/TagMatcher.cs
index bcdc2ab..dbde1ec 100644
--- a/Repopulator/Matchers/TagMatcher.cs
+++ b/Repopulator/Matchers/TagMatcher.cs
@@ -33,10 +33,11 @@ public TagMatcher(CsvToDicomTagMapping map, DicomRepopulatorOptions options):bas
             if(_indexer == null)
                 throw new ArgumentException("No valid indexer could be found, there must be a column in the map for either SOP, Series or Study instance UIDs");
 
-            using var reader = new CsvReader(map.CsvFile.OpenText(), new(System.Globalization.CultureInfo.CurrentCulture)
+            var conf = new CsvConfiguration(System.Globalization.CultureInfo.CurrentCulture)
             {
-                TrimOptions = TrimOptions.Trim
-            });
+                TrimOptions=TrimOptions.Trim;
+            };
+            using var reader = new CsvReader(map.CsvFile.OpenText(), conf);
             while (reader.Read())
             {
                 string key = reader[_indexer.Index];