diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index bea5cb3..923c643 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -10,12 +10,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04, ubuntu-18.04, ubuntu-16.04]
+        os: [ubuntu-20.04, ubuntu-18.04]
     steps:
       - name: Update lists
         run: |
-          . /etc/lsb-release
-          dpkg -l | awk '($1 == "ii") && ($2 ~ /^lib|lib$/) { print $2 }' | sed 's/:amd64//' > /tmp/"$DISTRIB_CODENAME"-libs
+          . /etc/os-release
+          dpkg -l | awk '($1 == "ii") && ($2 ~ /^lib|lib$/) { print $2 }' | sed 's/:amd64//' > /tmp/"$VERSION_CODENAME"-libs
       - name: Upload Artifact
         uses: actions/upload-artifact@v2
         with:
diff --git a/README.md b/README.md
index 4b88e98..3771ebf 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,6 @@ Cache PHP extensions in [GitHub Actions](https://github.com/features/actions "Gi
 |--- |--- |
 |Ubuntu 20.04|`ubuntu-latest` or `ubuntu-20.04`|
 |Ubuntu 18.04|`ubuntu-18.04`|
-|Ubuntu 16.04|`ubuntu-16.04`|
 |Windows Server 2022|`windows-2022`|
 |Windows Server 2019|`windows-latest` or `windows-2019`|
 |macOS Catalina 10.15|`macos-latest` or `macOS-10.15`|
diff --git a/src/lists/xenial-libs b/src/lists/xenial-libs
deleted file mode 100644
index 5012537..0000000
--- a/src/lists/xenial-libs
+++ /dev/null
@@ -1,743 +0,0 @@
-lib32gcc1
-lib32stdc++6
-lib32z1
-libaccountsservice0
-libacl1
-libaio1
-libapparmor-perl
-libapparmor1
-libapr1
-libaprutil1
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-libaprutil1-ldap
-libapt-inst2.0
-libapt-pkg5.0
-libarchive13
-libargon2-1
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-libasound2
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-libavahi-client3
-libavahi-common-data
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-libblas-common
-libblas-dev
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-libblkid1
-libboost-filesystem1.58.0
-libboost-system1.58.0
-libbsd0
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-libbz2-1.0
-libbz2-dev
-libc++-dev
-libc++-helpers
-libc++1
-libc++abi-dev
-libc++abi1
-libc-ares2
-libc-bin
-libc-client2007e
-libc-dev-bin
-libc6
-libc6-dev
-libc6-i386
-libcairo-gobject2
-libcairo-script-interpreter2
-libcairo2
-libcairo2-dev
-libcanberra0
-libcap-ng0
-libcap2
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-libcc1-0
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-libcgi-pm-perl
-libcgraph6
-libcgroup1
-libcilkrts5
-libclang-common-9-dev
-libclang-cpp9
-libcolord2
-libcomerr2
-libcommon-sense-perl
-libcroco3
-libcryptsetup4
-libcups2
-libcurl3
-libcurl3-gnutls
-libdatrie1
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-libdbus-1-3
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-libdbusmenu-glib4
-libdbusmenu-gtk3-4
-libdconf1
-libdebconfclient0
-libdevmapper-event1.02.1
-libdevmapper1.02.1
-libdjvulibre-dev
-libdjvulibre-text
-libdjvulibre21
-libdns-export162
-libdns162
-libdpkg-perl
-libdrm-amdgpu1
-libdrm-common
-libdrm-intel1
-libdrm-nouveau2
-libdrm-radeon1
-libdrm2
-libdumbnet1
-libdw1
-libeatmydata1
-libedit2
-libefivar0
-libegl1-mesa
-libelf1
-libenchant1c2a
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-libepoxy0
-liberror-perl
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-libevent-core-2.0-5
-libevent-pthreads-2.0-5
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-libexif12
-libexpat1
-libexpat1-dev
-libfakeroot
-libfbclient2
-libfcgi-perl
-libfdisk1
-libffi-dev
-libffi6
-libfftw3-double3
-libfile-basedir-perl
-libfile-desktopentry-perl
-libfile-listing-perl
-libfile-mimeinfo-perl
-libfl-dev
-libfont-afm-perl
-libfontconfig1
-libfontconfig1-dev
-libfontenc1
-libfreetype6
-libfreetype6-dev
-libfribidi0
-libfuse2
-libgbm-dev
-libgbm1
-libgc1c2
-libgcc-5-dev
-libgcc-9-dev
-libgcc1
-libgconf-2-4
-libgcrypt20
-libgd3
-libgdbm3
-libgdiplus
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-libgdk-pixbuf2.0-common
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-libgeoip1
-libgflags2v5
-libgfortran-5-dev
-libgfortran-9-dev
-libgfortran3
-libgfortran5
-libgif7
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-libgl1-mesa-dri
-libgl1-mesa-glx
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-libglib2.0-0
-libglib2.0-bin
-libglib2.0-cil
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-libglib2.0-dev
-libgmp-dev
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-libgmpxx4ldbl
-libgnutls-openssl27
-libgnutls30
-libgomp1
-libgoogle-glog0v5
-libgpg-error0
-libgpm2
-libgraphite2-3
-libgraphviz-dev
-libgsl-dev
-libgsl2
-libgssapi-krb5-2
-libgssapi3-heimdal
-libgtk-3-0
-libgtk-3-bin
-libgtk-3-common
-libgtk2.0-0
-libgtk2.0-cil
-libgtk2.0-common
-libgvc6
-libgvc6-plugins-gtk
-libgvpr2
-libharfbuzz0b
-libhavege1
-libhcrypto4-heimdal
-libheimbase1-heimdal
-libheimntlm0-heimdal
-libhogweed4
-libhtml-form-perl
-libhtml-format-perl
-libhtml-parser-perl
-libhtml-tagset-perl
-libhtml-template-perl
-libhtml-tree-perl
-libhttp-cookies-perl
-libhttp-daemon-perl
-libhttp-date-perl
-libhttp-message-perl
-libhttp-negotiate-perl
-libhunspell-1.3-0
-libhx509-5-heimdal
-libice-dev
-libice6
-libicu-dev
-libicu55
-libicu65
-libidn11
-libilmbase-dev
-libilmbase12
-libio-html-perl
-libio-socket-ssl-perl
-libipc-system-simple-perl
-libisc-export160
-libisc160
-libisccc140
-libisccfg140
-libisl15
-libisoburn1
-libisofs6
-libitm1
-libjasper-dev
-libjasper1
-libjbig-dev
-libjbig0
-libjpeg-dev
-libjpeg-turbo8
-libjpeg-turbo8-dev
-libjpeg8
-libjpeg8-dev
-libjs-jquery
-libjson-c2
-libjson-glib-1.0-0
-libjson-glib-1.0-common
-libjson-perl
-libjson-xs-perl
-libjte1
-libk5crypto3
-libkeyutils1
-libklibc
-libkmod2
-libkrb5-26-heimdal
-libkrb5-3
-libkrb5support0
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-liblapack-dev
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-liblcms2-2
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-libldap-2.4-2
-libldb1
-liblldb-9
-libllvm6.0
-libllvm9
-liblmdb0
-liblocale-gettext-perl
-liblqr-1-0
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-liblsan0
-libltdl-dev
-libltdl7
-liblttng-ust-ctl2
-liblttng-ust0
-liblua5.1-0
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-liblvm2app2.2
-liblvm2cmd2.02
-liblwp-mediatypes-perl
-liblwp-protocol-https-perl
-liblwres141
-liblxc1
-liblz4-1
-liblzma-dev
-liblzma5
-liblzo2-2
-libmagic-dev
-libmagic1
-libmagickcore-6-arch-config
-libmagickcore-6-headers
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-libmagickcore-6.q16-2-extra
-libmagickcore-6.q16-dev
-libmagickcore-dev
-libmagickwand-6-headers
-libmagickwand-6.q16-2
-libmagickwand-6.q16-dev
-libmagickwand-dev
-libmailtools-perl
-libmcrypt4
-libmediainfo0v5
-libmemcached11
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-libsoup-gnome2.4-1
-libsoup2.4-1
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-libtcltk-ruby
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-libxcursor1
-libxdamage1
-libxdmcp-dev
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-libxfixes3
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-libxft2
-libxi6
-libxinerama1
-libxkbcommon0
-libxkbfile-dev
-libxkbfile1
-libxml-libxml-perl
-libxml-namespacesupport-perl
-libxml-parser-perl
-libxml-sax-base-perl
-libxml-sax-perl
-libxml-twig-perl
-libxml-xpathengine-perl
-libxml2
-libxml2-dev
-libxmlrpc-epi0
-libxmlsec1
-libxmlsec1-openssl
-libxmu6
-libxmuu1
-libxpm4
-libxrandr2
-libxrender-dev
-libxrender1
-libxshmfence1
-libxslt1.1
-libxss1
-libxt-dev
-libxt6
-libxtables11
-libxtst6
-libxv1
-libxxf86dga1
-libxxf86vm1
-libyaml-0-2
-libz3-dev
-libzen0v5
-libzip4
-libzmq5
-libzstd1
-python3-oauthlib