diff --git a/requirements-test.txt b/requirements-test.txt
index 5f1081e..08cb07a 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -8,3 +8,4 @@ pylint-strict-informational==0.1
 pytest>=7.2
 pytest-cov>=3.0
 pytest-homeassistant-custom-component>=0.12
+tzdata