diff --git a/jc/parsers/last.py b/jc/parsers/last.py
index 6fdaaaac..4d6d87ba 100644
--- a/jc/parsers/last.py
+++ b/jc/parsers/last.py
@@ -154,10 +154,12 @@ def process(proc_data):
             entry['logout'] = 'gone - no logout'
 
         if 'login' in entry and re.match(r'.*\d\d:\d\d:\d\d \d\d\d\d.*', entry['login']):
-            entry['login_epoch'] = jc.utils.parse_datetime_to_timestamp(entry['login'])['timestamp_naive']
+            timestamp = jc.utils.timestamp(entry['login'])
+            entry['login_epoch'] = timestamp.naive
 
         if 'logout' in entry and re.match(r'.*\d\d:\d\d:\d\d \d\d\d\d.*', entry['logout']):
-            entry['logout_epoch'] = jc.utils.parse_datetime_to_timestamp(entry['logout'])['timestamp_naive']
+            timestamp = jc.utils.timestamp(entry['logout'])
+            entry['logout_epoch'] = timestamp.naive
 
         if 'login_epoch' in entry and 'logout_epoch' in entry:
             entry['duration_seconds'] = int(entry['logout_epoch']) - int(entry['login_epoch'])