diff --git a/package_versions.txt b/package_versions.txt
index 6d50932..5d88bb1 100755
--- a/package_versions.txt
+++ b/package_versions.txt
@@ -6,7 +6,7 @@ base-passwd3.5.47
 bash5.0-6ubuntu1.1
 bsdutils1:2.34-0.1ubuntu9.1
 bzip21.0.8-2
-ca-certificates20190110ubuntu1.1
+ca-certificates20201027ubuntu0.20.04.1
 coreutils8.30-3ubuntu2
 curl7.68.0-1ubuntu2.2
 dash0.5.10.2-6
@@ -137,7 +137,7 @@ sed4.7-1
 sensible-utils0.0.12+nmu1
 sysvinit-utils2.96-2.1ubuntu1
 tar1.30+dfsg-7
-tzdata2020a-0ubuntu0.20.04
+tzdata2020d-0ubuntu0.20.04
 ubuntu-keyring2020.02.11.2
 util-linux2.34-0.1ubuntu9.1
 zlib1g1:1.2.11.dfsg-2ubuntu1.1