diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 03365311..7487e970 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -109,7 +109,6 @@ jobs:
     - name: Install Dependencies
       run: |
         sudo add-apt-repository ppa:flatpak/stable
-        sudo add-apt-repository 'deb https://download.mono-project.com/repo/ubuntu stable-bionic main' # Needed for updates to work
         sudo apt-get update
         sudo apt-get install -y libglib2.0-dev attr automake gettext autopoint bison  dbus gtk-doc-tools \
         libfuse-dev ostree libostree-dev libarchive-dev libzstd-dev libcap-dev libattr1-dev libdw-dev libelf-dev python3-pyparsing \
@@ -188,7 +187,6 @@ jobs:
     - name: Install Dependencies
       run: |
         sudo add-apt-repository ppa:flatpak/stable
-        sudo add-apt-repository 'deb https://download.mono-project.com/repo/ubuntu stable-bionic main' # Needed for updates to work
         sudo apt-get update
         sudo apt-get install -y libglib2.0-dev attr automake gettext autopoint bison  dbus gtk-doc-tools \
         libfuse-dev ostree libostree-dev libarchive-dev libzstd-dev libcap-dev libattr1-dev libdw-dev libelf-dev python3-pyparsing \
@@ -219,7 +217,6 @@ jobs:
       run: |
         sudo add-apt-repository ppa:flatpak/stable
         sudo apt-get update
-        sudo add-apt-repository 'deb https://download.mono-project.com/repo/ubuntu stable-focal main' # Needed for updates to work
         sudo apt-get install -y libglib2.0-dev attr automake gettext autopoint bison  dbus gtk-doc-tools \
         libfuse-dev ostree libostree-dev libarchive-dev libzstd-dev libcap-dev libattr1-dev libdw-dev libelf-dev python3-pyparsing \
         libjson-glib-dev shared-mime-info desktop-file-utils libpolkit-agent-1-dev libpolkit-gobject-1-dev \