diff --git a/pyproject.toml b/pyproject.toml
index 359d926..1e8d8f1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,11 @@ description = "Add your description here"
 readme = "README.md"
 license = { text = "MIT" }
 requires-python = "==3.13.*"
-dependencies = ["discord-py>=2.6.4", "pydantic-settings>=2.12.0"]
+dependencies = [
+    "discord-py>=2.6.4",
+    "pydantic-settings>=2.12.0",
+    "tzdata>=2025.3; sys_platform == 'win32'",
+]
 
 [dependency-groups]
 dev = [
diff --git a/uv.lock b/uv.lock
index 85addb6..b6a7393 100644
--- a/uv.lock
+++ b/uv.lock
@@ -122,6 +122,7 @@ source = { virtual = "." }
 dependencies = [
     { name = "discord-py" },
     { name = "pydantic-settings" },
+    { name = "tzdata", marker = "sys_platform == 'win32'" },
 ]
 
 [package.dev-dependencies]
@@ -141,6 +142,7 @@ dev = [
 requires-dist = [
     { name = "discord-py", specifier = ">=2.6.4" },
     { name = "pydantic-settings", specifier = ">=2.12.0" },
+    { name = "tzdata", marker = "sys_platform == 'win32'", specifier = ">=2025.3" },
 ]
 
 [package.metadata.requires-dev]
@@ -713,6 +715,15 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/dc/9b/47798a6c91d8bdb567fe2698fe81e0c6b7cb7ef4d13da4114b41d239f65d/typing_inspection-0.4.2-py3-none-any.whl", hash = "sha256:4ed1cacbdc298c220f1bd249ed5287caa16f34d44ef4e9c3d0cbad5b521545e7", size = 14611, upload-time = "2025-10-01T02:14:40.154Z" },
 ]
 
+[[package]]
+name = "tzdata"
+version = "2025.3"
+source = { registry = "https://pypi.org/simple" }
+sdist = { url = "https://files.pythonhosted.org/packages/5e/a7/c202b344c5ca7daf398f3b8a477eeb205cf3b6f32e7ec3a6bac0629ca975/tzdata-2025.3.tar.gz", hash = "sha256:de39c2ca5dc7b0344f2eba86f49d614019d29f060fc4ebc8a417896a620b56a7", size = 196772, upload-time = "2025-12-13T17:45:35.667Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/c7/b0/003792df09decd6849a5e39c28b513c06e84436a54440380862b5aeff25d/tzdata-2025.3-py2.py3-none-any.whl", hash = "sha256:06a47e5700f3081aab02b2e513160914ff0694bce9947d6b76ebd6bf57cfc5d1", size = 348521, upload-time = "2025-12-13T17:45:33.889Z" },
+]
+
 [[package]]
 name = "uv"
 version = "0.9.28"