diff --git a/pomodoro_to_harvest.py b/pomodoro_to_harvest.py
index e0accf4..72d117e 100644
--- a/pomodoro_to_harvest.py
+++ b/pomodoro_to_harvest.py
@@ -83,8 +83,8 @@ timelog["day_of_week"] = pd.to_datetime(timelog["date"]).dt.day_name()
 
 # If a project has been specified (task prefixed with a colon), then put the
 # project in its own column.
-timelog['project'] = (np.where(timelog['description'].str.contains(': '), timelog['description'].str.split(': ', 1).str[0], None))
-timelog['description'] = (np.where(timelog['description'].str.contains(': '), timelog['description'].str.split(': ', 1).str[1], timelog['description']))
+timelog['project'] = (np.where(timelog['description'].str.contains(': '), timelog['description'].str.split(': ', n=1).str[0], None))
+timelog['description'] = (np.where(timelog['description'].str.contains(': '), timelog['description'].str.split(': ', n=1).str[1], timelog['description']))
 
 # Mid-work clean up of description and new project.
 timelog['description'] = timelog['description'].str.strip()
@@ -160,8 +160,8 @@ for preferred, alternatives in compound_project_tasks.items():
 
 # If a compound project was specified, break that out into a sub-project (in
 # Harvest, we use Task, which is really task type, for this).
-timelog['subproject'] = (np.where(timelog['project'].str.contains(' — '), timelog['project'].str.split(' — ', 1).str[1], None))
-timelog['project'] = (np.where(timelog['project'].str.contains(' — '), timelog['project'].str.split(' — ', 1).str[0], timelog['project']))
+timelog['subproject'] = (np.where(timelog['project'].str.contains(' — '), timelog['project'].str.split(' — ', n=1).str[1], None))
+timelog['project'] = (np.where(timelog['project'].str.contains(' — '), timelog['project'].str.split(' — ', n=1).str[0], timelog['project']))
 
 # Replace irregular-but-known project names with ones timetracking tools use.
 harvest_project_names = {