diff --git a/personal_data/fetchers/partisia_blockchain.py b/personal_data/fetchers/partisia_blockchain.py
index 10527d5..d3ae59c 100644
--- a/personal_data/fetchers/partisia_blockchain.py
+++ b/personal_data/fetchers/partisia_blockchain.py
@@ -5,6 +5,7 @@ import re
 import json
 import secrets
 from decimal import Decimal
+import email.utils
 
 import bs4
 
@@ -34,7 +35,7 @@ class MpcBalance(Scraper):
     deduplicate_mode = DeduplicateMode.ONLY_LATEST
     deduplicate_ignore_columns = ['account.update_time']
 
-    def get_json(self, url: str, data: dict) -> tuple[dict,str]:
+    def get_json(self, url: str, data: dict) -> tuple[dict, datetime.datetime]:
         headers = {
                 'Content-Type': 'application/json',
                 'Accept': 'application/json',
@@ -42,7 +43,8 @@ class MpcBalance(Scraper):
 
         response = self.session.post(url, headers = headers, data=json.dumps(data))
         response.raise_for_status()
-        date = response.headers.get('last-modified') or response.headers.get('date')
+        date_text = response.headers.get('last-modified') or response.headers.get('date')
+        date = email.utils.parsedate_to_datetime(date_text)
         json_data = response.json()
         if json_data is None:
             msg = 'No result data for ' + url
@@ -64,11 +66,6 @@ class MpcBalance(Scraper):
         address = secrets.PBC_ACCOUNT_ADDRESS
         coins = self.determine_coins()
 
-        headers = {
-                'Content-Type': 'application/json',
-                'Accept': 'application/json',
-        }
-
         url = URL_ACCOUNT_PLUGIN.format(
                 hostname = HOSTNAME,
                 shard = shard_id_for_address(address),