diff --git a/pyproject.toml b/pyproject.toml
index 81f4ae6..030e7b6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,6 +27,7 @@ classifiers = [
 dependencies = [
     "requests",
     "requests-cache",
+    "pytz",
     "xmltodict"
 ]