diff --git a/package_versions.txt b/package_versions.txt
index 0efc2d3..8d275f0 100755
--- a/package_versions.txt
+++ b/package_versions.txt
@@ -356,7 +356,7 @@ sensible-utils0.0.12
 sqlite33.22.0-1ubuntu0.4
 sysvinit-utils2.88dsf-59.10ubuntu1
 tar1.29b-2ubuntu0.2
-tzdata2020f-0ubuntu0.18.04
+tzdata2021a-0ubuntu0.18.04
 ubuntu-keyring2018.09.18.1~18.04.0
 ucf3.0038
 unzip6.0-21ubuntu1.1