diff --git a/src/coldfront_plugin_cloud/management/commands/fetch_daily_billable_usage.py b/src/coldfront_plugin_cloud/management/commands/fetch_daily_billable_usage.py
index 18d4c9a..c32206b 100644
--- a/src/coldfront_plugin_cloud/management/commands/fetch_daily_billable_usage.py
+++ b/src/coldfront_plugin_cloud/management/commands/fetch_daily_billable_usage.py
@@ -192,7 +192,9 @@ def s3_client(self):
     def load_csv(location) -> DataFrameGroupBy:
         df = pandas.read_csv(
             location,
-            dtype={INVOICE_COLUMN_COST: pandas.ArrowDtype(pyarrow.decimal128(12, 2))},
+        )
+        df = df.astype(
+            {INVOICE_COLUMN_COST: pandas.ArrowDtype(pyarrow.decimal128(12, 2))}
         )
         return df.groupby(INVOICE_COLUMN_ALLOCATION_ID)