diff --git a/poetry.lock b/poetry.lock
index bbd4948..b9c4d2e 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1109,13 +1109,13 @@ cli = ["click (>=5.0)"]
 
 [[package]]
 name = "pytz"
-version = "2023.4"
+version = "2024.2"
 description = "World timezone definitions, modern and historical"
 optional = false
 python-versions = "*"
 files = [
-    {file = "pytz-2023.4-py2.py3-none-any.whl", hash = "sha256:f90ef520d95e7c46951105338d918664ebfd6f1d995bd7d153127ce90efafa6a"},
-    {file = "pytz-2023.4.tar.gz", hash = "sha256:31d4583c4ed539cd037956140d695e42c033a19e984bfce9964a3f7d59bc2b40"},
+    {file = "pytz-2024.2-py2.py3-none-any.whl", hash = "sha256:31c7c1817eb7fae7ca4b8c7ee50c72f93aa2dd863de768e1ef4245d426aa0725"},
+    {file = "pytz-2024.2.tar.gz", hash = "sha256:2aa355083c50a0f93fa581709deac0c9ad65cca8a9e9beac660adcbd493c798a"},
 ]
 
 [[package]]
@@ -1410,13 +1410,13 @@ files = [
 
 [[package]]
 name = "tzdata"
-version = "2024.1"
+version = "2024.2"
 description = "Provider of IANA time zone data"
 optional = false
 python-versions = ">=2"
 files = [
-    {file = "tzdata-2024.1-py2.py3-none-any.whl", hash = "sha256:9068bc196136463f5245e51efda838afa15aaeca9903f49050dfa2679db4d252"},
-    {file = "tzdata-2024.1.tar.gz", hash = "sha256:2674120f8d891909751c38abcdfd386ac0a5a1127954fbc332af6b5ceae07efd"},
+    {file = "tzdata-2024.2-py2.py3-none-any.whl", hash = "sha256:a48093786cdcde33cad18c2555e8532f34422074448fbc874186f0abd79565cd"},
+    {file = "tzdata-2024.2.tar.gz", hash = "sha256:7d85cc416e9382e69095b7bdf4afd9e3880418a2413feec7069d533d6b4e31cc"},
 ]
 
 [[package]]
@@ -1559,4 +1559,4 @@ multidict = ">=4.0"
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.10"
-content-hash = "f33c7718be64a92e29e505e7eb5b9e81a0798f8f39dace72f84a5252929de461"
+content-hash = "16927096e101f554ba000dca244fff62dbb5d70a4f99e21dd5cee3c6323823bd"
diff --git a/pyproject.toml b/pyproject.toml
index 1696ed9..b2c691e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,6 @@ python = "^3.10"
 "discord.py" = "^2.3.2"
 icalendar = "^5.0"
 "python-dateutil" = "^2.9"
-pytz = "^2023.3"
 requests = "^2.31"
 beautifulsoup4 = "^4.12"
 APScheduler = "^3.10"
@@ -21,6 +20,7 @@ aio-mc-rcon = "^3.2.0"
 PyYAML = "^6.0"
 mcstatus = "^11.1.0"
 pillow = "^11.0.0"
+tzdata = "*"
 
 [tool.poetry.scripts]
 botdev = "dev.cli:main"
diff --git a/uqcsbot/utils/advent_utils.py b/uqcsbot/utils/advent_utils.py
index 8df4a44..a7d294b 100644
--- a/uqcsbot/utils/advent_utils.py
+++ b/uqcsbot/utils/advent_utils.py
@@ -12,8 +12,8 @@
 )
 from collections import defaultdict
 from datetime import datetime, timedelta
+from zoneinfo import ZoneInfo
 from io import BytesIO
-from pytz import timezone
 
 import PIL.Image
 import PIL.ImageDraw
@@ -38,7 +38,7 @@
 Leaderboard = list[str | ColourFragment]
 
 # Puzzles are unlocked at midnight EST.
-EST_TIMEZONE = timezone("US/Eastern")
+EST_TIMEZONE = ZoneInfo("America/New_York")
 
 # The time to cache results to limit requests to adventofcode.com. Note that 15 minutes is the recomended minimum time.
 CACHE_TIME = timedelta(minutes=15)
@@ -95,7 +95,7 @@ def from_member_data(cls, data: Json, year: int) -> "Member":
             times = member.times[day]
 
             # timestamp of puzzle unlock (12AM EST)
-            DAY_START = EST_TIMEZONE.localize(datetime(year, 12, day))
+            DAY_START = datetime(year, 12, day, tzinfo=EST_TIMEZONE)
 
             for s, star_data in day_data.items():
                 star = int(s)