diff --git a/check.py b/check.py
index 8a39b9a..7f41650 100755
--- a/check.py
+++ b/check.py
@@ -1,6 +1,7 @@
 #!/usr/bin/python3
 
 import os
+import re
 from datetime import date, datetime
 
 from playwright.sync_api import Playwright, Request, expect, sync_playwright
@@ -57,14 +58,24 @@ def run(playwright: Playwright) -> None:
     hr = HandleResponse()
     page.on("requestfinished", hr.requestfinished)
 
+    re_month_name = re.compile(r"^([A-Z][a-z]+) (\d{4})$")
+
     page.goto("https://www.eurotunnel.com/uk/")
     page.get_by_role("button", name="Accept All Cookies").click()
+
     page.get_by_role("textbox", name="Outbound").click()
-    page.get_by_role("row", name="August 2023").get_by_role("cell").nth(1).click()
+    month_row = page.get_by_role("row", name=re_month_name)
+    month_and_year = month_row.inner_text().strip()
+    if month_and_year == "August 2023":
+        month_row.get_by_role("cell").nth(1).click()
+    else:
+        assert month_and_year == "September 2023"
     page.get_by_role("cell", name="29").click()
+
     page.get_by_role("textbox", name="Return").click()
     page.get_by_role("row", name="September 2023").get_by_role("cell").nth(2).click()
     page.get_by_role("cell", name="6", exact=True).click()
+
     page.get_by_role("button", name="Search and book").click()
     page.get_by_label("Enter your vehicle registration").fill("KE69HRR")
     page.get_by_role("button", name="Find").click()