diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8ccae50..a7508d5 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -22,7 +22,8 @@ jobs:
         run: |
           sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list
           sudo apt-get update -qq
-          sudo apt-get install -yqq --allow-downgrades libpcre2-8-0/focal libpcre2-16-0/focal libpcre2-32-0/focal libpcre2-posix2/focal
+          sudo apt-get install -yqq --allow-downgrades libgd3/focal libpcre2-8-0/focal libpcre2-16-0/focal libpcre2-32-0/focal libpcre2-posix2/focal
+          sudo apt-get purge -yqq libmono* moby* mono* php* libgdiplus libpcre2-posix3 libzip4
       - name: Set up dependencies
         run: |
           sudo dpkg --add-architecture arm64
@@ -60,7 +61,8 @@ jobs:
         run: |
           sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list
           sudo apt-get update -qq
-          sudo apt-get install -yqq --allow-downgrades libpcre2-8-0/focal libpcre2-16-0/focal libpcre2-32-0/focal libpcre2-posix2/focal
+          sudo apt-get install -yqq --allow-downgrades libgd3/focal libpcre2-8-0/focal libpcre2-16-0/focal libpcre2-32-0/focal libpcre2-posix2/focal
+          sudo apt-get purge -yqq libmono* moby* mono* php* libgdiplus libpcre2-posix3 libzip4
       - name: Set up dependencies
         run: |
           sudo dpkg --add-architecture armhf
@@ -98,7 +100,8 @@ jobs:
         run: |
           sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list
           sudo apt-get update -qq
-          sudo apt-get install -yqq --allow-downgrades libpcre2-8-0/focal libpcre2-16-0/focal libpcre2-32-0/focal libpcre2-posix2/focal
+          sudo apt-get install -yqq --allow-downgrades libgd3/focal libpcre2-8-0/focal libpcre2-16-0/focal libpcre2-32-0/focal libpcre2-posix2/focal
+          sudo apt-get purge -yqq libmono* moby* mono* php* libgdiplus libpcre2-posix3 libzip4
       - name: Set up dependencies
         run: |
           sudo dpkg --add-architecture i386
@@ -193,7 +196,8 @@ jobs:
         run: |
           sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list
           sudo apt-get update -qq
-          sudo apt-get install -yqq --allow-downgrades libpcre2-8-0/focal libpcre2-16-0/focal libpcre2-32-0/focal libpcre2-posix2/focal
+          sudo apt-get install -yqq --allow-downgrades libgd3/focal libpcre2-8-0/focal libpcre2-16-0/focal libpcre2-32-0/focal libpcre2-posix2/focal
+          sudo apt-get purge -yqq libmono* moby* mono* php* libgdiplus libpcre2-posix3 libzip4
       - name: Set up dependencies
         run: |
           sudo dpkg --add-architecture i386
@@ -226,6 +230,12 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: recursive
+      - name: Fix GitHub's mess
+        run: |
+          sudo rm -f /etc/apt/sources.list.d/microsoft-prod.list
+          sudo apt-get update -qq
+          sudo apt-get install -yqq --allow-downgrades libgd3/focal libpcre2-8-0/focal libpcre2-16-0/focal libpcre2-32-0/focal libpcre2-posix2/focal
+          sudo apt-get purge -yqq libmono* moby* mono* php* libgdiplus libpcre2-posix3 libzip4
       - name: Set up dependencies
         run: |
           sudo apt-get update -qq
diff --git a/dpf b/dpf
index 0c0a4e4..1aa5892 160000
--- a/dpf
+++ b/dpf
@@ -1 +1 @@
-Subproject commit 0c0a4e401c2a552145720904b916da21846c8fc1
+Subproject commit 1aa5892a13d7797935964443ae7dda6e08c470cd