diff --git a/package_versions.txt b/package_versions.txt
index b7311ef..748256f 100755
--- a/package_versions.txt
+++ b/package_versions.txt
@@ -155,8 +155,8 @@ libvdpau11.1.1-3ubuntu1
 libvorbis0a1.3.5-4.2
 libvorbisenc21.3.5-4.2
 libvpx51.7.0-3ubuntu0.18.04.1
-libwebp60.6.1-2
-libwebpmux30.6.1-2
+libwebp60.6.1-2ubuntu0.18.04.1
+libwebpmux30.6.1-2ubuntu0.18.04.1
 libwind0-heimdal7.5.0+dfsg-1
 libx11-62:1.6.4-3ubuntu0.4
 libx11-data2:1.6.4-3ubuntu0.4