diff --git a/update_calendar.py b/update_calendar.py
new file mode 100644
index 0000000..0abd41e
--- /dev/null
+++ b/update_calendar.py
@@ -0,0 +1,71 @@
+import csv
+import datetime
+from pathlib import Path
+
+from google.oauth2 import service_account
+from googleapiclient.discovery import build
+
+SCOPES = [
+    "https://www.googleapis.com/auth/calendar.events",
+    "https://www.googleapis.com/auth/calendar",
+]
+
+# This calendar ID is public.
+CALENDAR_ID = "0ji9k94abd2sehteqqqt4jo47c@group.calendar.google.com"
+
+CURRENT_YEAR = datetime.datetime.now().year
+
+
+def main():
+    creds = service_account.Credentials.from_service_account_file(
+        "credentials.json", scopes=SCOPES
+    )
+    service = build("calendar", "v3", credentials=creds)
+
+    current_events = (
+        service.events().list(calendarId=CALENDAR_ID, pageToken=None).execute()
+    )
+
+    with Path(f"{CURRENT_YEAR}.csv").open("r") as csv_file:
+        csv_reader = csv.DictReader(csv_file, delimiter=",")
+        csv_events = [row for row in csv_reader]
+
+    for event in csv_events:
+        if event["Subject"] in {
+            curr_event["summary"] for curr_event in current_events["items"]
+        }:
+            continue
+
+        py_event_body = {
+            "summary": event["Subject"],
+            "location": event["Location"],
+            "start": {"date": event["Start Date"]},
+            "end": {"date": event["End Date"]},
+            "description": event.get("Website URL", ""),
+        }
+        python_event = (
+            service.events()
+            .insert(calendarId=CALENDAR_ID, body=py_event_body, sendUpdates="all")
+            .execute()
+        )
+        print("Event created: %s" % (python_event.get("htmlLink")))
+
+        deadline = event["Talk Deadline"]
+        if deadline:
+            talk_event_body = {
+                "summary": event["Subject"],
+                "location": event["Location"],
+                "start": {"date": deadline},
+                "end": {"date": deadline},
+                "description": event.get("Website URL", ""),
+            }
+            talk_proposal_event = (
+                service.events()
+                .insert(calendarId=CALENDAR_ID, body=talk_event_body, sendUpdates="all")
+                .execute()
+            )
+            print("Event created: %s" % (talk_proposal_event.get("htmlLink")))
+
+
+if __name__ == "__main__":
+    main()