diff --git a/hatchet/readers/caliper_native_reader.py b/hatchet/readers/caliper_native_reader.py
index bf9c0b05..7846c3c4 100644
--- a/hatchet/readers/caliper_native_reader.py
+++ b/hatchet/readers/caliper_native_reader.py
@@ -299,6 +299,10 @@ def _parse_metadata(self, mdata):
         """
         parsed_mdata = {}
         for k, v in mdata.items():
+            # environment information service brings in different metadata types
+            if isinstance(v, list):
+                parsed_mdata[k] = v
+                continue
             # If the value is an int, convert it to an int.
             try:
                 parsed_mdata[k] = int(v)