diff --git a/package_versions.txt b/package_versions.txt
index ab92ee431affb2ce7f88dd31c38827a4c69853c7..26534512470c517a4b6ec920d2bb208eeef609ef 100755
--- a/package_versions.txt
+++ b/package_versions.txt
@@ -5,7 +5,7 @@ base-files9.4ubuntu4.13
 base-passwd3.5.39
 bash4.3-14ubuntu1.4
 bsdutils1:2.27.1-6ubuntu3.10
-ca-certificates20190110~16.04.1
+ca-certificates20201027ubuntu0.16.04.1
 coreutils8.25-2ubuntu3~16.04
 curl7.47.0-1ubuntu2.16
 dash0.5.8-2.1ubuntu2
@@ -118,7 +118,7 @@ ncurses-base6.0+20160213-1ubuntu1
 ncurses-bin6.0+20160213-1ubuntu1
 openssl1.0.2g-1ubuntu4.17
 passwd1:4.2-3.1ubuntu5.4
-perl-base5.22.1-9ubuntu0.6
+perl-base5.22.1-9ubuntu0.9
 procps2:3.3.10-4ubuntu2.5
 readline-common6.3-8ubuntu2
 sed4.2.2-7
@@ -128,7 +128,7 @@ systemd-sysv229-4ubuntu21.29
 sysvinit-utils2.88dsf-59.3ubuntu2
 sysv-rc2.88dsf-59.3ubuntu2
 tar1.28-2.1ubuntu0.1
-tzdata2020a-0ubuntu0.16.04
+tzdata2020d-0ubuntu0.16.04
 ubuntu-keyring2012.05.19.1
 util-linux2.27.1-6ubuntu3.10
 zlib1g1:1.2.8.dfsg-2ubuntu4.3