diff --git a/taxonomylib/taxonomylib.py b/taxonomylib/taxonomylib.py
index 08f5bafc9d9914cc26c172e99b2320a90e700e7d..08983a4d26a15bcdb54f9f30b21e57af26e29537 100644
--- a/taxonomylib/taxonomylib.py
+++ b/taxonomylib/taxonomylib.py
@@ -70,6 +70,7 @@ taxonomy_ids = {
     "PC": "material",
     "S": "material",
     "SL": "material",
+    "SR": "material",
     "SRC": "material",
     "ST": "material",
     "UNK": "material",  # Not defined in GEM Taxonomy (seems to come from HAZUS)
@@ -87,6 +88,7 @@ taxonomy_ids = {
     "LFLS": "llrs",
     "LFM": "llrs",
     "LH": "llrs",
+    "LN": "llrs",
     "LPB": "llrs",
     "LWAL": "llrs",
     "H": "height",