diff --git a/DESCRIPTION b/DESCRIPTION
index 43fd5f0..bb3fe52 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -33,6 +33,7 @@ Suggests:
     rprojroot,
     spelling,
     testthat,
+    tzdb,
     withr
 Roxygen: list(markdown = TRUE)
 RoxygenNote: 7.3.2.9000