diff --git a/pyproject.toml b/pyproject.toml
index 3a63c0f..1f7cdde 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,6 +15,7 @@ dependencies = [
     "pyyaml>=6.0.1",
     "tenacity>=8.2.3",
     "apscheduler>=3.10.4",
+    "tzdata==2023.3",
 ]
 requires-python = ">=3.11"
 license = {text = "MIT"}
diff --git a/requirements.txt b/requirements.txt
index dff472e..fa016cd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,3 +7,4 @@ orjson==3.9.10
 pydantic==2.5.1
 PyYAML==6.0.1
 tenacity==8.2.3
+tzdata==2023.3