diff --git a/.github/workflows/checker.yml b/.github/workflows/checker.yml
index 700766b83..ba40458d0 100644
--- a/.github/workflows/checker.yml
+++ b/.github/workflows/checker.yml
@@ -25,6 +25,19 @@ jobs:
         id: make_fledge
         run: |
           set -e
+          echo "⚠️ APT is misinterpreting the mirror+file: scheme as a URL 🌐, causing 404 errors ❌ due to a missing or invalid /etc/apt/apt-mirrors.txt file 📄."
+          RELEASE=$(lsb_release -cs)
+          echo "Using release: $RELEASE"
+          cat <<EOF | sudo tee /etc/apt/sources.list
+          deb http://archive.ubuntu.com/ubuntu $RELEASE main restricted universe multiverse
+          deb http://archive.ubuntu.com/ubuntu $RELEASE-updates main restricted universe multiverse
+          deb http://archive.ubuntu.com/ubuntu $RELEASE-backports main restricted universe multiverse
+          deb http://security.ubuntu.com/ubuntu $RELEASE-security main restricted universe multiverse
+          EOF
+          sudo apt-get update
+          sudo apt-get install -y --fix-missing
+
+          echo "🔧 Run setup prerequisites 📦 and compilation of code 🛠️"
           cd "$FLEDGE_ROOT"
           sudo ./requirements.sh
           make -j"$(nproc)"