diff --git a/package_versions.txt b/package_versions.txt
index 2f769a4..d8241d2 100755
--- a/package_versions.txt
+++ b/package_versions.txt
@@ -237,10 +237,10 @@ readline-common7.0-3
 sed4.4-2
 sensible-utils0.0.12
 shared-mime-info1.9-2
-sudo1.8.21p2-3ubuntu1.3
+sudo1.8.21p2-3ubuntu1.4
 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
 unzip6.0-21ubuntu1.1
 util-linux2.31.1-0.4ubuntu3.7