diff --git a/package_versions.txt b/package_versions.txt
index b0223ea..7c59591 100755
--- a/package_versions.txt
+++ b/package_versions.txt
@@ -100,7 +100,7 @@ libstdc++68.2.0-1ubuntu2~18.04
 libsystemd0237-3ubuntu10.19
 libtasn1-64.13-2
 libtinfo56.1-1ubuntu1.18.04
-libudev1237-3ubuntu10.20
+libudev1237-3ubuntu10.21
 libunistring20.9.9-0ubuntu2
 libuuid12.31.1-0.4ubuntu3.3
 libwind0-heimdal7.5.0+dfsg-1
@@ -115,7 +115,7 @@ ncurses-bin6.1-1ubuntu1.18.04
 openssl1.1.0g-2ubuntu4.3
 passwd1:4.5-1ubuntu1
 perl-base5.26.1-6ubuntu0.3
-plexmediaserver1.15.3.876-ad6e39743
+plexmediaserver1.15.4.993-bb4a2cb6c
 procps2:3.3.12-3ubuntu1.1
 publicsuffix20180223.1310-1
 sed4.4-2
@@ -124,7 +124,7 @@ sysvinit-utils2.88dsf-59.10ubuntu1
 tar1.29b-2ubuntu0.1
 tzdata2018i-0ubuntu0.18.04
 ubuntu-keyring2018.09.18.1~18.04.0
-udev237-3ubuntu10.20
+udev237-3ubuntu10.21
 unrar1:5.5.8-1
 util-linux2.31.1-0.4ubuntu3.3
 wget1.19.4-1ubuntu2.2