diff --git a/.github/workflows/test-gnofract4d.yml b/.github/workflows/test-gnofract4d.yml
index 7b037539..467ab38f 100644
--- a/.github/workflows/test-gnofract4d.yml
+++ b/.github/workflows/test-gnofract4d.yml
@@ -41,7 +41,9 @@ jobs:
         # dbus-x11 avoids timeouts, failed to execute "dbus-launch"
         # gvfs is needed for Gio.AppInfo.launch_default_for_uri()
         # libxml2-utils provides xmllint for xml-stripblanks in gresource.xml
-        run: sudo apt install dbus-x11 gir1.2-gtk-4.0 gvfs libgirepository1.0-dev libxml2-utils xvfb
+        run: |
+          sudo apt update
+          sudo apt install dbus-x11 gir1.2-gtk-4.0 gvfs libgirepository1.0-dev libxml2-utils xvfb
       - name: Setup Python
         uses: actions/setup-python@v4
         with:
@@ -75,7 +77,9 @@ jobs:
       - uses: actions/checkout@v3
       - name: Install Ubuntu packages
         # libglib2.0-dev-bin provides glib-compile-resources
-        run: sudo apt install gir1.2-gtk-4.0 libglib2.0-dev-bin libxml2-utils python3-gi
+        run: |
+          sudo apt update
+          sudo apt install gir1.2-gtk-4.0 libglib2.0-dev-bin libxml2-utils python3-gi
       - name: Install Tox
         run: pip install tox
       - name: Build