diff --git a/agenda/bristol_waste.py b/agenda/bristol_waste.py
index cab155f..db8f80f 100644
--- a/agenda/bristol_waste.py
+++ b/agenda/bristol_waste.py
@@ -17,12 +17,10 @@ ttl_hours = 12
 BristolSchedule = list[dict[str, typing.Any]]
 
 
-async def get(
-    start_date: date, data_dir: str, uprn: str, refresh: bool = False
-) -> list[Event]:
+async def get(start_date: date, data_dir: str, uprn: str, cache: str) -> list[Event]:
     """Get waste collection schedule from Bristol City Council."""
     by_date: defaultdict[date, list[str]] = defaultdict(list)
-    for item in await get_data(data_dir, uprn, refresh):
+    for item in await get_data(data_dir, uprn, cache):
         service = get_service(item)
         for d in collections(item):
             if d < start_date and service not in by_date[d]:
@@ -34,7 +32,7 @@ async def get(
     ]
 
 
-async def get_data(data_dir: str, uprn: str, refresh: bool = False) -> BristolSchedule:
+async def get_data(data_dir: str, uprn: str, cache: str) -> BristolSchedule:
     """Get Bristol Waste schedule, with cache."""
     now = datetime.now()
     waste_dir = os.path.join(data_dir, "waste")
@@ -52,7 +50,11 @@ async def get_data(data_dir: str, uprn: str, refresh: bool = False) -> BristolSc
         json_data = json.load(open(os.path.join(waste_dir, recent_filename)))
         return typing.cast(BristolSchedule, json_data["data"])
 
-    if not refresh and existing and delta < timedelta(hours=ttl_hours):
+    if (
+        cache != "refresh"
+        and existing
+        and (cache == "force" or delta < timedelta(hours=ttl_hours))
+    ):
         return get_from_recent()
 
     try:
diff --git a/agenda/data.py b/agenda/data.py
index c1f6f4d..7054a72 100644
--- a/agenda/data.py
+++ b/agenda/data.py
@@ -62,20 +62,21 @@ def timezone_transition(
 
 
 async def n_somerset_waste_collection_events(
-    data_dir: str, postcode: str, uprn: str
+    data_dir: str, postcode: str, uprn: str, force_cache: bool = False
 ) -> list[Event]:
     """Waste colllection events."""
-    html = await n_somerset_waste.get_html(data_dir, postcode, uprn)
+    html = await n_somerset_waste.get_html(data_dir, postcode, uprn, force_cache)
     root = lxml.html.fromstring(html)
     events = n_somerset_waste.parse(root)
     return events
 
 
 async def bristol_waste_collection_events(
-    data_dir: str, start_date: date, uprn: str
+    data_dir: str, start_date: date, uprn: str, force_cache: bool = False
 ) -> list[Event]:
     """Waste colllection events."""
-    return await bristol_waste.get(start_date, data_dir, uprn)
+    cache = "force" if force_cache else "recent"
+    return await bristol_waste.get(start_date, data_dir, uprn, cache)
 
 
 def find_events_during_stay(
@@ -193,6 +194,7 @@ async def get_data(now: datetime, config: flask.config.Config) -> AgendaData:
             data_dir,
             config["BACKWELL_POSTCODE"],
             config["BACKWELL_UPRN"],
+            offline_mode,
         ),
         time_function(
             "bristol_bins",
@@ -200,6 +202,7 @@ async def get_data(now: datetime, config: flask.config.Config) -> AgendaData:
             data_dir,
             today,
             config["BRISTOL_UPRN"],
+            offline_mode,
         ),
     )
     rockets = thespacedevs.read_cached_launches(rocket_dir)
diff --git a/agenda/n_somerset_waste.py b/agenda/n_somerset_waste.py
index 16b168a..2d9cddd 100644
--- a/agenda/n_somerset_waste.py
+++ b/agenda/n_somerset_waste.py
@@ -15,7 +15,9 @@ from .utils import make_waste_dir
 ttl_hours = 12
 
 
-async def get_html(data_dir: str, postcode: str, uprn: str) -> str:
+async def get_html(
+    data_dir: str, postcode: str, uprn: str, force_cache: bool = False
+) -> str:
     """Get waste schedule."""
     now = datetime.now()
     waste_dir = os.path.join(data_dir, "waste")
@@ -29,7 +31,7 @@ async def get_html(data_dir: str, postcode: str, uprn: str) -> str:
         recent = datetime.strptime(recent_filename, "%Y-%m-%d_%H:%M.html")
         delta = now - recent
 
-    if existing and delta < timedelta(hours=ttl_hours):
+    if existing and (force_cache or delta < timedelta(hours=ttl_hours)):
         return open(os.path.join(waste_dir, recent_filename)).read()
 
     now_str = now.strftime("%Y-%m-%d_%H:%M")
diff --git a/update.py b/update.py
index 3216ed4..a22b169 100755
--- a/update.py
+++ b/update.py
@@ -40,7 +40,10 @@ async def update_bristol_bins(config: flask.config.Config) -> None:
     """Update waste schedule from Bristol City Council."""
     t0 = time()
     events = await agenda.bristol_waste.get(
-        date.today(), config["DATA_DIR"], config["BRISTOL_UPRN"], refresh=True
+        date.today(),
+        config["DATA_DIR"],
+        config["BRISTOL_UPRN"],
+        cache="refresh",
     )
     time_taken = time() - t0
     if not sys.stdin.isatty():